/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:13:47,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:13:47,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:13:47,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:13:47,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:13:47,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:13:47,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:13:47,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:13:47,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:13:47,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:13:47,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:13:47,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:13:47,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:13:47,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:13:47,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:13:47,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:13:47,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:13:47,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:13:47,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:13:47,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:13:47,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:13:47,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:13:47,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:13:47,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:13:47,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:13:47,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:13:47,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:13:47,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:13:47,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:13:47,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:13:47,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:13:47,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:13:47,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:13:47,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:13:47,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:13:47,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:13:47,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:13:47,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:13:47,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:13:47,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:13:47,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:13:47,212 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 [2020-10-12 19:13:47,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:13:47,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:13:47,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:13:47,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:13:47,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:13:47,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:13:47,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:13:47,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:13:47,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:13:47,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:13:47,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:13:47,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:13:47,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:13:47,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:13:47,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:13:47,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:13:47,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:13:47,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:13:47,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:13:47,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:13:47,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:13:47,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:13:47,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:13:47,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:13:47,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:13:47,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:13:47,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:13:47,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:13:47,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:13:47,271 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:13:47,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:13:47,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:13:47,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:13:47,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:13:47,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:13:47,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:13:47,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/884b2652c/a3bcae2747e74bc084971ae60a29ef9a/FLAGeddd86a6b [2020-10-12 19:13:48,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:13:48,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:13:48,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/884b2652c/a3bcae2747e74bc084971ae60a29ef9a/FLAGeddd86a6b [2020-10-12 19:13:48,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/884b2652c/a3bcae2747e74bc084971ae60a29ef9a [2020-10-12 19:13:48,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:13:48,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:13:48,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:48,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:13:48,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:13:48,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:48" (1/1) ... [2020-10-12 19:13:48,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9890d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:48, skipping insertion in model container [2020-10-12 19:13:48,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:13:48" (1/1) ... [2020-10-12 19:13:48,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:13:48,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:13:49,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:49,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:13:49,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:13:49,316 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:13:49,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49 WrapperNode [2020-10-12 19:13:49,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:13:49,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:13:49,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:13:49,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:13:49,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (1/1) ... [2020-10-12 19:13:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:13:49,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:13:49,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:13:49,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:13:49,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (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 [2020-10-12 19:13:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:13:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:13:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:13:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:13:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:13:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:13:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:13:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:13:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:13:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:13:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:13:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:13:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:13:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:13:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:13:50,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:13:50,909 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:13:50,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:50 BoogieIcfgContainer [2020-10-12 19:13:50,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:13:50,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:13:50,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:13:50,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:13:50,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:13:48" (1/3) ... [2020-10-12 19:13:50,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37560239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:50, skipping insertion in model container [2020-10-12 19:13:50,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:13:49" (2/3) ... [2020-10-12 19:13:50,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37560239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:13:50, skipping insertion in model container [2020-10-12 19:13:50,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:13:50" (3/3) ... [2020-10-12 19:13:50,926 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:13:50,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:13:50,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:13:50,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:13:50,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:13:50,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:13:50,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:13:50,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:13:50,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:13:50,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:13:50,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:13:50,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:13:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-12 19:13:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:13:51,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:51,032 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] [2020-10-12 19:13:51,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 112483708, now seen corresponding path program 1 times [2020-10-12 19:13:51,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:51,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284214091] [2020-10-12 19:13:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:56,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:56,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:13:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:13:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 19:13:56,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:13:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 19:13:57,089 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:57,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:57,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:57,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:13:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:57,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284214091] [2020-10-12 19:13:57,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:57,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:57,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227588886] [2020-10-12 19:13:57,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:57,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:57,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:57,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:57,229 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 5 states. [2020-10-12 19:14:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:00,238 INFO L93 Difference]: Finished difference Result 892 states and 1581 transitions. [2020-10-12 19:14:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:14:00,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 19:14:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:00,261 INFO L225 Difference]: With dead ends: 892 [2020-10-12 19:14:00,261 INFO L226 Difference]: Without dead ends: 587 [2020-10-12 19:14:00,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-12 19:14:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2020-10-12 19:14:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-12 19:14:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 847 transitions. [2020-10-12 19:14:00,405 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 847 transitions. Word has length 148 [2020-10-12 19:14:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:00,405 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 847 transitions. [2020-10-12 19:14:00,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 847 transitions. [2020-10-12 19:14:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 19:14:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:00,412 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] [2020-10-12 19:14:00,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:14:00,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2115959658, now seen corresponding path program 1 times [2020-10-12 19:14:00,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:00,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590333542] [2020-10-12 19:14:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 19:14:05,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:14:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 19:14:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:14:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:05,966 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:05,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:14:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:06,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590333542] [2020-10-12 19:14:06,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:06,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:06,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454811698] [2020-10-12 19:14:06,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:06,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:06,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:06,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:06,068 INFO L87 Difference]: Start difference. First operand 585 states and 847 transitions. Second operand 5 states. [2020-10-12 19:14:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:08,982 INFO L93 Difference]: Finished difference Result 1681 states and 2426 transitions. [2020-10-12 19:14:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:08,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-12 19:14:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:08,989 INFO L225 Difference]: With dead ends: 1681 [2020-10-12 19:14:08,990 INFO L226 Difference]: Without dead ends: 1128 [2020-10-12 19:14:08,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-12 19:14:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1126. [2020-10-12 19:14:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2020-10-12 19:14:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1615 transitions. [2020-10-12 19:14:09,067 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1615 transitions. Word has length 149 [2020-10-12 19:14:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:09,067 INFO L479 AbstractCegarLoop]: Abstraction has 1126 states and 1615 transitions. [2020-10-12 19:14:09,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1615 transitions. [2020-10-12 19:14:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:14:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:09,072 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] [2020-10-12 19:14:09,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:14:09,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 157647613, now seen corresponding path program 1 times [2020-10-12 19:14:09,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:09,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385535788] [2020-10-12 19:14:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:14,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 19:14:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:14:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:14:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:14:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:14,506 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:14,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:14,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:14:14,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:14,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385535788] [2020-10-12 19:14:14,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:14,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:14,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486709076] [2020-10-12 19:14:14,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:14,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:14,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:14,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:14,616 INFO L87 Difference]: Start difference. First operand 1126 states and 1615 transitions. Second operand 5 states. [2020-10-12 19:14:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:17,069 INFO L93 Difference]: Finished difference Result 3226 states and 4601 transitions. [2020-10-12 19:14:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:17,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 19:14:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:17,083 INFO L225 Difference]: With dead ends: 3226 [2020-10-12 19:14:17,085 INFO L226 Difference]: Without dead ends: 2152 [2020-10-12 19:14:17,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-10-12 19:14:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2150. [2020-10-12 19:14:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-12 19:14:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3037 transitions. [2020-10-12 19:14:17,278 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3037 transitions. Word has length 150 [2020-10-12 19:14:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:17,279 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 3037 transitions. [2020-10-12 19:14:17,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3037 transitions. [2020-10-12 19:14:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 19:14:17,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:17,287 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] [2020-10-12 19:14:17,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:14:17,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1879064567, now seen corresponding path program 1 times [2020-10-12 19:14:17,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:17,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081667593] [2020-10-12 19:14:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 19:14:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:14:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:14:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:14:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:22,631 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:22,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:22,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:14:22,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:22,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081667593] [2020-10-12 19:14:22,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:22,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:22,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574387794] [2020-10-12 19:14:22,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:22,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:22,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:22,705 INFO L87 Difference]: Start difference. First operand 2150 states and 3037 transitions. Second operand 5 states. [2020-10-12 19:14:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:25,576 INFO L93 Difference]: Finished difference Result 5690 states and 8089 transitions. [2020-10-12 19:14:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:25,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 19:14:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:25,604 INFO L225 Difference]: With dead ends: 5690 [2020-10-12 19:14:25,605 INFO L226 Difference]: Without dead ends: 4124 [2020-10-12 19:14:25,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2020-10-12 19:14:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 4122. [2020-10-12 19:14:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-10-12 19:14:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 5747 transitions. [2020-10-12 19:14:25,855 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 5747 transitions. Word has length 151 [2020-10-12 19:14:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:25,856 INFO L479 AbstractCegarLoop]: Abstraction has 4122 states and 5747 transitions. [2020-10-12 19:14:25,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 5747 transitions. [2020-10-12 19:14:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 19:14:25,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:25,865 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] [2020-10-12 19:14:25,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:14:25,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1987984385, now seen corresponding path program 1 times [2020-10-12 19:14:25,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:25,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875682750] [2020-10-12 19:14:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:30,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 19:14:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 19:14:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:31,191 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:14:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:31,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875682750] [2020-10-12 19:14:31,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:31,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:31,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758461916] [2020-10-12 19:14:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:31,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:31,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:31,265 INFO L87 Difference]: Start difference. First operand 4122 states and 5747 transitions. Second operand 5 states. [2020-10-12 19:14:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:32,889 INFO L93 Difference]: Finished difference Result 7168 states and 9960 transitions. [2020-10-12 19:14:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:32,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 19:14:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:32,905 INFO L225 Difference]: With dead ends: 7168 [2020-10-12 19:14:32,906 INFO L226 Difference]: Without dead ends: 3190 [2020-10-12 19:14:32,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-12 19:14:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3174. [2020-10-12 19:14:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-10-12 19:14:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4403 transitions. [2020-10-12 19:14:33,132 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4403 transitions. Word has length 152 [2020-10-12 19:14:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:33,132 INFO L479 AbstractCegarLoop]: Abstraction has 3174 states and 4403 transitions. [2020-10-12 19:14:33,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4403 transitions. [2020-10-12 19:14:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:14:33,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:33,141 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] [2020-10-12 19:14:33,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:14:33,142 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash 368095127, now seen corresponding path program 1 times [2020-10-12 19:14:33,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:33,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684865445] [2020-10-12 19:14:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 19:14:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:38,444 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:38,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:14:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:38,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684865445] [2020-10-12 19:14:38,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:38,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:14:38,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781514789] [2020-10-12 19:14:38,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:14:38,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:38,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:14:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:38,503 INFO L87 Difference]: Start difference. First operand 3174 states and 4403 transitions. Second operand 6 states. [2020-10-12 19:14:38,746 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:14:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:40,583 INFO L93 Difference]: Finished difference Result 7900 states and 11626 transitions. [2020-10-12 19:14:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:14:40,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-12 19:14:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:40,615 INFO L225 Difference]: With dead ends: 7900 [2020-10-12 19:14:40,615 INFO L226 Difference]: Without dead ends: 6738 [2020-10-12 19:14:40,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:14:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6738 states. [2020-10-12 19:14:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6738 to 5242. [2020-10-12 19:14:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5242 states. [2020-10-12 19:14:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 7423 transitions. [2020-10-12 19:14:40,984 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 7423 transitions. Word has length 159 [2020-10-12 19:14:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:40,985 INFO L479 AbstractCegarLoop]: Abstraction has 5242 states and 7423 transitions. [2020-10-12 19:14:40,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:14:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 7423 transitions. [2020-10-12 19:14:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:14:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:40,995 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] [2020-10-12 19:14:40,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:14:40,996 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1136722602, now seen corresponding path program 1 times [2020-10-12 19:14:40,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:40,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003698377] [2020-10-12 19:14:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:46,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:14:46,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:14:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:14:46,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:14:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 19:14:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:14:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:46,522 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:14:46,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:46,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:14:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:46,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003698377] [2020-10-12 19:14:46,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:46,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:14:46,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972854916] [2020-10-12 19:14:46,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:14:46,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:46,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:14:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:14:46,609 INFO L87 Difference]: Start difference. First operand 5242 states and 7423 transitions. Second operand 12 states. [2020-10-12 19:14:47,212 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2020-10-12 19:14:49,959 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-12 19:14:52,766 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 19:14:54,972 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 36