/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=NARROWEST --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.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:22:38,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:22:38,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:22:38,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:22:38,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:22:38,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:22:38,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:22:38,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:22:38,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:22:38,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:22:38,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:22:38,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:22:38,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:22:38,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:22:38,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:22:38,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:22:38,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:22:38,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:22:38,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:22:38,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:22:38,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:22:38,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:22:38,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:22:38,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:22:38,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:22:38,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:22:38,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:22:38,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:22:38,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:22:38,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:22:38,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:22:38,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:22:38,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:22:38,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:22:38,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:22:38,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:22:38,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:22:38,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:22:38,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:22:38,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:22:38,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:22:38,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:22:38,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:22:38,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:22:38,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:22:38,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:22:38,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:22:38,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:22:38,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:22:38,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:22:38,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:22:38,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:22:38,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:22:38,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:22:38,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:22:38,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:22:38,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:22:38,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:22:38,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:22:38,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:22:38,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:22:38,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:22:38,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:22:38,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:22:38,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:22:38,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:22:38,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:22:38,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:22:38,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:22:38,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:22:38,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:22:38,559 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:22:38,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:22:39,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:22:39,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:22:39,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:22:39,019 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:22:39,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 02:22:39,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8d36c5ec/7c6ace694fea42b2a055a32f641d2d64/FLAG1f5411ffb [2020-09-25 02:22:39,881 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:22:39,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 02:22:39,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8d36c5ec/7c6ace694fea42b2a055a32f641d2d64/FLAG1f5411ffb [2020-09-25 02:22:40,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8d36c5ec/7c6ace694fea42b2a055a32f641d2d64 [2020-09-25 02:22:40,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:22:40,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:22:40,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:22:40,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:22:40,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:22:40,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:22:40" (1/1) ... [2020-09-25 02:22:40,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f6f65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:40, skipping insertion in model container [2020-09-25 02:22:40,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:22:40" (1/1) ... [2020-09-25 02:22:40,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:22:40,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:22:41,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:22:41,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:22:42,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:22:42,280 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:22:42,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42 WrapperNode [2020-09-25 02:22:42,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:22:42,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:22:42,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:22:42,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:22:42,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... [2020-09-25 02:22:42,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:22:42,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:22:42,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:22:42,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:22:42,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:22:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:22:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:22:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:22:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:22:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:22:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 02:22:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 02:22:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 02:22:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:22:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:22:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 02:22:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 02:22:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 02:22:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 02:22:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 02:22:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 02:22:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 02:22:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 02:22:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:22:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:22:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:22:45,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:22:45,947 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:22:45,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:22:45 BoogieIcfgContainer [2020-09-25 02:22:45,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:22:45,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:22:45,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:22:45,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:22:45,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:22:40" (1/3) ... [2020-09-25 02:22:45,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14486617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:22:45, skipping insertion in model container [2020-09-25 02:22:45,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:42" (2/3) ... [2020-09-25 02:22:45,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14486617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:22:45, skipping insertion in model container [2020-09-25 02:22:45,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:22:45" (3/3) ... [2020-09-25 02:22:45,974 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 02:22:45,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:22:45,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:22:46,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:22:46,069 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:22:46,069 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:22:46,069 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:22:46,069 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:22:46,069 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:22:46,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:22:46,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:22:46,070 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:22:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-25 02:22:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 02:22:46,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:22:46,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:22:46,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:22:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:22:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-25 02:22:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:22:46,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678398983] [2020-09-25 02:22:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:22:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:22:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:22:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 02:22:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:22:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 02:22:52,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:22:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:22:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-09-25 02:22:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 02:22:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 02:22:54,196 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 02:22:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:22:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:22:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:54,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:22:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:22:54,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:22:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 02:22:54,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:22:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:22:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:22:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:22:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:22:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:22:55,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678398983] [2020-09-25 02:22:55,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:22:55,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:22:55,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473637152] [2020-09-25 02:22:55,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:22:55,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:22:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:22:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:22:55,597 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 5 states. [2020-09-25 02:23:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:23:10,365 INFO L93 Difference]: Finished difference Result 5405 states and 7220 transitions. [2020-09-25 02:23:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:23:10,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-25 02:23:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:23:10,421 INFO L225 Difference]: With dead ends: 5405 [2020-09-25 02:23:10,421 INFO L226 Difference]: Without dead ends: 3338 [2020-09-25 02:23:10,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:23:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-09-25 02:23:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2020-09-25 02:23:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-09-25 02:23:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4193 transitions. [2020-09-25 02:23:10,686 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4193 transitions. Word has length 932 [2020-09-25 02:23:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:23:10,690 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 4193 transitions. [2020-09-25 02:23:10,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:23:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4193 transitions. [2020-09-25 02:23:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 02:23:10,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:23:10,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:23:10,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:23:10,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:23:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:23:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash 808841012, now seen corresponding path program 1 times [2020-09-25 02:23:10,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:23:10,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326704427] [2020-09-25 02:23:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:23:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:14,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:16,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:23:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 941 [2020-09-25 02:23:16,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:23:16,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-09-25 02:23:16,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:23:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:23:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-09-25 02:23:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 02:23:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 02:23:16,877 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 02:23:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:23:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:16,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:23:16,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:23:16,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:23:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 02:23:16,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:23:16,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:23:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:23:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:23:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:23:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:23:17,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326704427] [2020-09-25 02:23:17,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:23:17,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:23:17,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457729563] [2020-09-25 02:23:17,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:23:17,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:23:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:23:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:23:17,685 INFO L87 Difference]: Start difference. First operand 3336 states and 4193 transitions. Second operand 4 states. [2020-09-25 02:23:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:23:32,445 INFO L93 Difference]: Finished difference Result 9051 states and 11467 transitions. [2020-09-25 02:23:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:23:32,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 934 [2020-09-25 02:23:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:23:32,479 INFO L225 Difference]: With dead ends: 9051 [2020-09-25 02:23:32,479 INFO L226 Difference]: Without dead ends: 6243 [2020-09-25 02:23:32,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:23:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2020-09-25 02:23:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 6241. [2020-09-25 02:23:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6241 states. [2020-09-25 02:23:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 7887 transitions. [2020-09-25 02:23:32,692 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 7887 transitions. Word has length 934 [2020-09-25 02:23:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:23:32,694 INFO L479 AbstractCegarLoop]: Abstraction has 6241 states and 7887 transitions. [2020-09-25 02:23:32,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:23:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 7887 transitions. [2020-09-25 02:23:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 02:23:32,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:23:32,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:23:32,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:23:32,717 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:23:32,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:23:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash -174367779, now seen corresponding path program 1 times [2020-09-25 02:23:32,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:23:32,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413306358] [2020-09-25 02:23:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:23:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat