/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:12:19,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:12:19,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:12:19,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:12:19,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:12:19,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:12:19,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:12:19,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:12:19,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:12:19,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:12:19,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:12:19,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:12:19,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:12:19,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:12:19,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:12:19,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:12:19,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:12:19,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:12:19,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:12:19,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:12:19,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:12:19,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:12:19,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:12:19,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:12:19,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:12:19,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:12:19,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:12:19,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:12:19,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:12:19,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:12:19,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:12:19,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:12:19,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:12:19,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:12:19,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:12:19,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:12:19,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:12:19,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:12:19,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:12:19,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:12:19,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:12:19,557 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 01:12:19,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:12:19,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:12:19,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:12:19,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:12:19,606 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:12:19,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:12:19,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:12:19,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:12:19,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:12:19,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:12:19,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:12:19,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:12:19,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:12:19,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:12:19,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:12:19,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:12:19,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:12:19,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:12:19,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:12:19,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:12:19,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:12:19,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:12:19,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:12:19,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:12:19,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:12:19,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:12:19,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:12:19,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:12:19,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:12:19,613 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:12:20,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:12:20,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:12:20,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:12:20,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:12:20,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:12:20,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 01:12:20,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7/FLAG6e5baf6a2 [2020-09-25 01:12:20,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:12:20,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 01:12:21,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7/FLAG6e5baf6a2 [2020-09-25 01:12:21,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7 [2020-09-25 01:12:21,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:12:21,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:12:21,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:12:21,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:12:21,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:12:21,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:21" (1/1) ... [2020-09-25 01:12:21,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:21, skipping insertion in model container [2020-09-25 01:12:21,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:21" (1/1) ... [2020-09-25 01:12:21,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:12:21,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:12:21,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:12:21,996 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:12:22,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:12:22,517 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:12:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22 WrapperNode [2020-09-25 01:12:22,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:12:22,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:12:22,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:12:22,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:12:22,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ... [2020-09-25 01:12:22,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:12:22,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:12:22,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:12:22,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:12:22,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (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 01:12:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:12:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:12:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:12:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:12:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:12:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 01:12:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 01:12:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 01:12:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:12:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:12:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 01:12:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 01:12:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 01:12:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 01:12:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 01:12:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 01:12:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 01:12:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:12:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:12:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:12:25,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:12:25,383 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 01:12:25,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:25 BoogieIcfgContainer [2020-09-25 01:12:25,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:12:25,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:12:25,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:12:25,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:12:25,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:12:21" (1/3) ... [2020-09-25 01:12:25,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:25, skipping insertion in model container [2020-09-25 01:12:25,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (2/3) ... [2020-09-25 01:12:25,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:25, skipping insertion in model container [2020-09-25 01:12:25,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:25" (3/3) ... [2020-09-25 01:12:25,407 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 01:12:25,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:12:25,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 01:12:25,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 01:12:25,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:12:25,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:12:25,491 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:12:25,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:12:25,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:12:25,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:12:25,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:12:25,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:12:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-25 01:12:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-25 01:12:25,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:25,579 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] [2020-09-25 01:12:25,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:25,589 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-25 01:12:25,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:25,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577834407] [2020-09-25 01:12:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:27,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:27,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-25 01:12:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:12:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 01:12:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-25 01:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 01:12:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:12:31,941 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:12:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:32,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:32,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 01:12:32,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 01:12:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:32,408 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 01:12:32,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577834407] [2020-09-25 01:12:32,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:32,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:12:32,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698079576] [2020-09-25 01:12:32,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:12:32,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:12:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:12:32,444 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 4 states. [2020-09-25 01:12:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:36,888 INFO L93 Difference]: Finished difference Result 1833 states and 2360 transitions. [2020-09-25 01:12:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:12:36,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-09-25 01:12:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:36,923 INFO L225 Difference]: With dead ends: 1833 [2020-09-25 01:12:36,924 INFO L226 Difference]: Without dead ends: 1303 [2020-09-25 01:12:36,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:12:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-25 01:12:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1296. [2020-09-25 01:12:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 01:12:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1545 transitions. [2020-09-25 01:12:37,059 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1545 transitions. Word has length 423 [2020-09-25 01:12:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:37,061 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1545 transitions. [2020-09-25 01:12:37,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:12:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1545 transitions. [2020-09-25 01:12:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-25 01:12:37,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:37,103 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] [2020-09-25 01:12:37,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:12:37,104 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash -74379501, now seen corresponding path program 1 times [2020-09-25 01:12:37,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:37,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539280120] [2020-09-25 01:12:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:41,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-25 01:12:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:12:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-09-25 01:12:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:12:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-25 01:12:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 01:12:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:43,234 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:12:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 01:12:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 01:12:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:43,575 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 01:12:43,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539280120] [2020-09-25 01:12:43,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:43,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:12:43,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411102640] [2020-09-25 01:12:43,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:12:43,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:12:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:12:43,581 INFO L87 Difference]: Start difference. First operand 1296 states and 1545 transitions. Second operand 5 states. [2020-09-25 01:12:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:50,736 INFO L93 Difference]: Finished difference Result 3348 states and 4039 transitions. [2020-09-25 01:12:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:12:50,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-25 01:12:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:50,752 INFO L225 Difference]: With dead ends: 3348 [2020-09-25 01:12:50,752 INFO L226 Difference]: Without dead ends: 2358 [2020-09-25 01:12:50,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:12:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2020-09-25 01:12:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2236. [2020-09-25 01:12:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-25 01:12:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2703 transitions. [2020-09-25 01:12:50,877 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2703 transitions. Word has length 423 [2020-09-25 01:12:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:50,879 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2703 transitions. [2020-09-25 01:12:50,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:12:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2703 transitions. [2020-09-25 01:12:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-25 01:12:50,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:50,886 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] [2020-09-25 01:12:50,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:12:50,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1675164715, now seen corresponding path program 1 times [2020-09-25 01:12:50,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:50,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667208539] [2020-09-25 01:12:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:55,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:55,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-25 01:12:55,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:12:55,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 01:12:55,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:55,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-09-25 01:12:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:12:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:56,308 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:12:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:56,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 01:12:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 01:12:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:56,649 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 01:12:56,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667208539] [2020-09-25 01:12:56,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:56,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:12:56,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638072181] [2020-09-25 01:12:56,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:12:56,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:12:56,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:12:56,655 INFO L87 Difference]: Start difference. First operand 2236 states and 2703 transitions. Second operand 4 states. [2020-09-25 01:13:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:02,900 INFO L93 Difference]: Finished difference Result 6213 states and 7554 transitions. [2020-09-25 01:13:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:02,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 424 [2020-09-25 01:13:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:02,919 INFO L225 Difference]: With dead ends: 6213 [2020-09-25 01:13:02,920 INFO L226 Difference]: Without dead ends: 4227 [2020-09-25 01:13:02,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-09-25 01:13:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2242. [2020-09-25 01:13:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-09-25 01:13:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2711 transitions. [2020-09-25 01:13:03,022 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2711 transitions. Word has length 424 [2020-09-25 01:13:03,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:03,023 INFO L479 AbstractCegarLoop]: Abstraction has 2242 states and 2711 transitions. [2020-09-25 01:13:03,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2711 transitions. [2020-09-25 01:13:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-25 01:13:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:03,031 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] [2020-09-25 01:13:03,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:13:03,031 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash 152897813, now seen corresponding path program 1 times [2020-09-25 01:13:03,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:03,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541008476] [2020-09-25 01:13:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:03,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking...