/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:54:52,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:54:52,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:54:52,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:54:52,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:54:52,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:54:52,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:54:52,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:54:52,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:54:52,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:54:52,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:54:52,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:54:52,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:54:52,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:54:52,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:54:52,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:54:52,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:54:52,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:54:52,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:54:52,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:54:52,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:54:52,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:54:52,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:54:52,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:54:52,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:54:52,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:54:52,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:54:52,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:54:52,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:54:52,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:54:52,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:54:52,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:54:52,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:54:52,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:54:52,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:54:52,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:54:52,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:54:52,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:54:52,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:54:52,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:54:52,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:54:52,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:54:52,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:54:52,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:54:52,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:54:52,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:54:52,304 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:54:52,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:54:52,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:54:52,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:54:52,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:54:52,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:54:52,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:54:52,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:54:52,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:54:52,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:54:52,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:54:52,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:54:52,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:54:52,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:54:52,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:54:52,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:54:52,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:54:52,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:54:52,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:54:52,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:54:52,309 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:54:52,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:54:52,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:54:52,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:54:52,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:54:52,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:54:52,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 21:54:52,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b688e224/37519035ff9f4d7486f0723a906ee114/FLAG6391dffec [2020-09-24 21:54:53,718 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:54:53,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 21:54:53,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b688e224/37519035ff9f4d7486f0723a906ee114/FLAG6391dffec [2020-09-24 21:54:53,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b688e224/37519035ff9f4d7486f0723a906ee114 [2020-09-24 21:54:53,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:54:53,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:54:53,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:53,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:54:53,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:54:53,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:53" (1/1) ... [2020-09-24 21:54:53,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:53, skipping insertion in model container [2020-09-24 21:54:53,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:53" (1/1) ... [2020-09-24 21:54:53,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:54:54,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:54:55,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:55,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:54:55,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:55,744 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:54:55,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55 WrapperNode [2020-09-24 21:54:55,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:55,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:54:55,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:54:55,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:54:55,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:55,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... [2020-09-24 21:54:56,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:54:56,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:54:56,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:54:56,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:54:56,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:54:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:54:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:54:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:54:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:54:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:54:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:54:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:54:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 21:54:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:54:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:54:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 21:54:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 21:54:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 21:54:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 21:54:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 21:54:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 21:54:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 21:54:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:54:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:54:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:54:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:54:59,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:54:59,469 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:54:59,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:59 BoogieIcfgContainer [2020-09-24 21:54:59,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:54:59,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:54:59,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:54:59,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:54:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:54:53" (1/3) ... [2020-09-24 21:54:59,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07e9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:59, skipping insertion in model container [2020-09-24 21:54:59,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:55" (2/3) ... [2020-09-24 21:54:59,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07e9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:59, skipping insertion in model container [2020-09-24 21:54:59,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:59" (3/3) ... [2020-09-24 21:54:59,494 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 21:54:59,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:54:59,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:54:59,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:54:59,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:54:59,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:54:59,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:54:59,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:54:59,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:54:59,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:54:59,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:54:59,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:54:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-24 21:54:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-24 21:54:59,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:59,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:59,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:59,753 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-24 21:54:59,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:59,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385760745] [2020-09-24 21:54:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:55:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:55:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:55:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-24 21:55:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:55:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:55:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:55:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:55:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 283 [2020-09-24 21:55:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-24 21:55:05,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:55:07,269 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 21:55:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:55:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:55:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:07,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:55:07,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:55:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:55:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:55:07,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:55:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:55:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:55:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:55:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:55:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:55:08,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385760745] [2020-09-24 21:55:08,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:55:08,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:55:08,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036018475] [2020-09-24 21:55:08,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:55:08,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:55:08,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:55:08,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:55:08,619 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 5 states. [2020-09-24 21:55:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:55:25,917 INFO L93 Difference]: Finished difference Result 5340 states and 7124 transitions. [2020-09-24 21:55:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:55:25,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-24 21:55:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:55:25,976 INFO L225 Difference]: With dead ends: 5340 [2020-09-24 21:55:25,977 INFO L226 Difference]: Without dead ends: 3342 [2020-09-24 21:55:25,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:55:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2020-09-24 21:55:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 3340. [2020-09-24 21:55:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2020-09-24 21:55:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4200 transitions. [2020-09-24 21:55:26,241 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4200 transitions. Word has length 932 [2020-09-24 21:55:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:55:26,249 INFO L479 AbstractCegarLoop]: Abstraction has 3340 states and 4200 transitions. [2020-09-24 21:55:26,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:55:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4200 transitions. [2020-09-24 21:55:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-24 21:55:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:55:26,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:55:26,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:55:26,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:55:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:55:26,367 INFO L82 PathProgramCache]: Analyzing trace with hash -979181030, now seen corresponding path program 1 times [2020-09-24 21:55:26,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:55:26,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073595039] [2020-09-24 21:55:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:55:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:55:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:55:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 941 [2020-09-24 21:55:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:55:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-09-24 21:55:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:55:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:55:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-09-24 21:55:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:55:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:55:33,073 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 21:55:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:55:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:55:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:55:33,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:55:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:55:33,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:55:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 21:55:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:55:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:55:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:55:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:55:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:55:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:55:34,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073595039] [2020-09-24 21:55:34,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:55:34,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:55:34,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715377060] [2020-09-24 21:55:34,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:55:34,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:55:34,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:55:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:55:34,444 INFO L87 Difference]: Start difference. First operand 3340 states and 4200 transitions. Second operand 5 states.