/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:29:45,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:29:45,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:29:45,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:29:45,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:29:45,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:29:45,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:29:45,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:29:45,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:29:45,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:29:45,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:29:45,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:29:45,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:29:45,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:29:45,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:29:45,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:29:45,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:29:45,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:29:45,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:29:45,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:29:45,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:29:45,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:29:45,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:29:45,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:29:45,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:29:45,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:29:45,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:29:45,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:29:45,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:29:45,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:29:45,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:29:45,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:29:45,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:29:45,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:29:45,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:29:45,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:29:45,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:29:45,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:29:45,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:29:45,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:29:45,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:29:45,256 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 03:29:45,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:29:45,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:29:45,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:29:45,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:29:45,307 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:29:45,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:29:45,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:29:45,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:29:45,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:29:45,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:29:45,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:29:45,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:29:45,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:29:45,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:29:45,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:29:45,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:29:45,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:29:45,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:29:45,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:29:45,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:29:45,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:29:45,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:29:45,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:29:45,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:29:45,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:29:45,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:29:45,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:29:45,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:29:45,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:29:45,313 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:29:45,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:29:45,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:29:45,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:29:45,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:29:45,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:29:45,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 03:29:45,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ed500ce/c439f56e7b79499da20b50f45ae72777/FLAG1e8109789 [2020-09-25 03:29:46,474 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:29:46,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 03:29:46,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ed500ce/c439f56e7b79499da20b50f45ae72777/FLAG1e8109789 [2020-09-25 03:29:46,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37ed500ce/c439f56e7b79499da20b50f45ae72777 [2020-09-25 03:29:46,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:29:46,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:29:46,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:46,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:29:46,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:29:46,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:46" (1/1) ... [2020-09-25 03:29:46,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:46, skipping insertion in model container [2020-09-25 03:29:46,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:46" (1/1) ... [2020-09-25 03:29:46,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:29:46,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:29:47,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:47,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:29:48,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:48,111 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:29:48,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48 WrapperNode [2020-09-25 03:29:48,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:48,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:29:48,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:29:48,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:29:48,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (1/1) ... [2020-09-25 03:29:48,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:29:48,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:29:48,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:29:48,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:29:48,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (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 03:29:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:29:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:29:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:29:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:29:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:29:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:29:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 03:29:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:29:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 03:29:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 03:29:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 03:29:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 03:29:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 03:29:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:29:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:29:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:29:50,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:29:50,403 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:29:50,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:50 BoogieIcfgContainer [2020-09-25 03:29:50,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:29:50,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:29:50,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:29:50,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:29:50,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:29:46" (1/3) ... [2020-09-25 03:29:50,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638c686d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:50, skipping insertion in model container [2020-09-25 03:29:50,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:48" (2/3) ... [2020-09-25 03:29:50,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638c686d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:50, skipping insertion in model container [2020-09-25 03:29:50,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:50" (3/3) ... [2020-09-25 03:29:50,435 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 03:29:50,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:29:50,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 03:29:50,480 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 03:29:50,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:29:50,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:29:50,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:29:50,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:29:50,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:29:50,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:29:50,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:29:50,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:29:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 03:29:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 03:29:50,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:50,602 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] [2020-09-25 03:29:50,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 03:29:50,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:50,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256305099] [2020-09-25 03:29:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:56,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 03:29:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:29:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 03:29:56,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:29:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-25 03:29:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 03:29:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:29:56,791 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:29:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:56,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:56,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:29:56,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 03:29:56,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:57,276 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 03:29:57,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256305099] [2020-09-25 03:29:57,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:29:57,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:29:57,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415116850] [2020-09-25 03:29:57,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:29:57,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:29:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:29:57,322 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-25 03:30:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:01,916 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-25 03:30:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:01,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-25 03:30:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:01,967 INFO L225 Difference]: With dead ends: 1830 [2020-09-25 03:30:01,968 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 03:30:01,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 03:30:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-25 03:30:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 03:30:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-25 03:30:02,119 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-25 03:30:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:02,121 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-25 03:30:02,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-25 03:30:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 03:30:02,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:02,132 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] [2020-09-25 03:30:02,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:30:02,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-25 03:30:02,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:02,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159662841] [2020-09-25 03:30:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:07,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 03:30:07,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:30:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-09-25 03:30:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 03:30:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 03:30:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:07,892 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:30:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:07,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:30:07,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:30:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:08,454 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 03:30:08,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159662841] [2020-09-25 03:30:08,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:08,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:08,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341219331] [2020-09-25 03:30:08,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:08,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:08,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:08,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:08,464 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-25 03:30:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:15,839 INFO L93 Difference]: Finished difference Result 3464 states and 4203 transitions. [2020-09-25 03:30:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:30:15,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 03:30:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:15,857 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 03:30:15,858 INFO L226 Difference]: Without dead ends: 2371 [2020-09-25 03:30:15,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:30:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-25 03:30:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2246. [2020-09-25 03:30:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2246 states. [2020-09-25 03:30:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 2730 transitions. [2020-09-25 03:30:15,961 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 2730 transitions. Word has length 414 [2020-09-25 03:30:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:15,962 INFO L479 AbstractCegarLoop]: Abstraction has 2246 states and 2730 transitions. [2020-09-25 03:30:15,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:30:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 2730 transitions. [2020-09-25 03:30:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 03:30:15,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:15,973 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] [2020-09-25 03:30:15,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:30:15,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:15,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-25 03:30:15,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:15,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820363712] [2020-09-25 03:30:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 03:30:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:30:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 03:30:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 03:30:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 03:30:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:21,577 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:30:21,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:30:21,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:30:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:22,036 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 03:30:22,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820363712] [2020-09-25 03:30:22,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:22,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:22,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785190654] [2020-09-25 03:30:22,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:22,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:22,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:22,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:22,041 INFO L87 Difference]: Start difference. First operand 2246 states and 2730 transitions. Second operand 5 states. [2020-09-25 03:30:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:28,115 INFO L93 Difference]: Finished difference Result 6208 states and 7594 transitions. [2020-09-25 03:30:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:30:28,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 03:30:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:28,136 INFO L225 Difference]: With dead ends: 6208 [2020-09-25 03:30:28,136 INFO L226 Difference]: Without dead ends: 4164 [2020-09-25 03:30:28,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:30:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2020-09-25 03:30:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4056. [2020-09-25 03:30:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-25 03:30:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4949 transitions. [2020-09-25 03:30:28,308 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4949 transitions. Word has length 415 [2020-09-25 03:30:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:28,309 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 4949 transitions. [2020-09-25 03:30:28,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:30:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4949 transitions. [2020-09-25 03:30:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 03:30:28,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:28,322 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] [2020-09-25 03:30:28,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:30:28,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:28,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1711630169, now seen corresponding path program 1 times [2020-09-25 03:30:28,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:28,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939220930] [2020-09-25 03:30:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:33,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 03:30:33,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:30:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 03:30:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 03:30:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 03:30:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0