/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:20:14,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:20:14,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:20:14,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:20:14,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:20:14,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:20:14,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:20:14,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:20:14,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:20:14,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:20:14,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:20:14,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:20:14,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:20:14,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:20:14,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:20:14,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:20:14,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:20:14,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:20:14,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:20:14,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:20:14,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:20:14,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:20:14,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:20:14,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:20:14,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:20:14,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:20:14,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:20:14,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:20:14,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:20:14,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:20:14,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:20:14,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:20:14,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:20:15,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:20:15,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:20:15,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:20:15,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:20:15,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:20:15,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:20:15,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:20:15,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:20:15,005 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 10:20:15,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:20:15,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:20:15,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:20:15,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:20:15,055 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:20:15,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:20:15,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:20:15,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:20:15,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:20:15,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:20:15,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:20:15,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:20:15,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:20:15,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:20:15,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:20:15,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:20:15,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:20:15,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:20:15,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:20:15,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:20:15,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:20:15,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:20:15,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:20:15,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:20:15,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:20:15,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:20:15,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:20:15,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:20:15,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:20:15,063 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:20:15,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:20:15,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:20:15,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:20:15,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:20:15,560 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:20:15,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 10:20:15,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a8275a7/15dbf965c0b54f9895c2a721e476c317/FLAG8bc18e5db [2020-09-25 10:20:16,251 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:20:16,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 10:20:16,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a8275a7/15dbf965c0b54f9895c2a721e476c317/FLAG8bc18e5db [2020-09-25 10:20:16,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a8275a7/15dbf965c0b54f9895c2a721e476c317 [2020-09-25 10:20:16,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:20:16,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:20:16,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:20:16,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:20:16,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:20:16,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:20:16" (1/1) ... [2020-09-25 10:20:16,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:16, skipping insertion in model container [2020-09-25 10:20:16,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:20:16" (1/1) ... [2020-09-25 10:20:16,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:20:16,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:20:17,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:20:17,397 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:20:17,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:20:17,879 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:20:17,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17 WrapperNode [2020-09-25 10:20:17,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:20:17,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:20:17,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:20:17,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:20:17,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:17,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:17,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:17,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:17,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:18,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:18,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (1/1) ... [2020-09-25 10:20:18,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:20:18,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:20:18,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:20:18,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:20:18,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (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 10:20:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:20:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:20:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:20:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:20:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:20:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 10:20:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 10:20:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 10:20:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:20:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:20:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 10:20:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 10:20:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 10:20:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 10:20:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 10:20:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 10:20:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 10:20:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:20:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:20:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:20:20,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:20:20,409 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:20:20,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:20 BoogieIcfgContainer [2020-09-25 10:20:20,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:20:20,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:20:20,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:20:20,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:20:20,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:20:16" (1/3) ... [2020-09-25 10:20:20,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcca1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:20, skipping insertion in model container [2020-09-25 10:20:20,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:17" (2/3) ... [2020-09-25 10:20:20,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcca1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:20, skipping insertion in model container [2020-09-25 10:20:20,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:20" (3/3) ... [2020-09-25 10:20:20,432 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 10:20:20,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:20:20,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 10:20:20,480 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 10:20:20,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:20:20,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:20:20,516 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:20:20,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:20:20,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:20:20,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:20:20,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:20:20,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:20:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-25 10:20:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 10:20:20,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:20,605 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] [2020-09-25 10:20:20,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-25 10:20:20,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:20,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705417058] [2020-09-25 10:20:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 10:20:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:20:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:20:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:26,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:20:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 10:20:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 10:20:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:20:27,241 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 10:20:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:27,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:27,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:20:27,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:20:27,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:27,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:27,682 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 10:20:27,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705417058] [2020-09-25 10:20:27,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:27,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:20:27,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406059008] [2020-09-25 10:20:27,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:20:27,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:27,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:20:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:20:27,736 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-25 10:20:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:33,082 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-25 10:20:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:20:33,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-25 10:20:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:33,118 INFO L225 Difference]: With dead ends: 2024 [2020-09-25 10:20:33,119 INFO L226 Difference]: Without dead ends: 1455 [2020-09-25 10:20:33,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:20:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-25 10:20:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-25 10:20:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-25 10:20:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-25 10:20:33,265 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-25 10:20:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:33,267 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-25 10:20:33,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:20:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-25 10:20:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 10:20:33,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:33,283 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] [2020-09-25 10:20:33,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:20:33,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-25 10:20:33,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:33,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330244963] [2020-09-25 10:20:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:38,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:38,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 10:20:38,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:20:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:20:38,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:38,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 10:20:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:20:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:39,207 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 10:20:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:39,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:39,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:20:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 10:20:39,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:39,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:39,740 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 10:20:39,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330244963] [2020-09-25 10:20:39,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:39,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:39,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769903466] [2020-09-25 10:20:39,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:39,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:39,746 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-25 10:20:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:47,563 INFO L93 Difference]: Finished difference Result 3758 states and 4526 transitions. [2020-09-25 10:20:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:20:47,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-25 10:20:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:47,577 INFO L225 Difference]: With dead ends: 3758 [2020-09-25 10:20:47,577 INFO L226 Difference]: Without dead ends: 2632 [2020-09-25 10:20:47,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:20:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-09-25 10:20:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2505. [2020-09-25 10:20:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2020-09-25 10:20:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3021 transitions. [2020-09-25 10:20:47,684 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3021 transitions. Word has length 465 [2020-09-25 10:20:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:47,685 INFO L479 AbstractCegarLoop]: Abstraction has 2505 states and 3021 transitions. [2020-09-25 10:20:47,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:20:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3021 transitions. [2020-09-25 10:20:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-25 10:20:47,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:47,699 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] [2020-09-25 10:20:47,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:20:47,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash 187069046, now seen corresponding path program 1 times [2020-09-25 10:20:47,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:47,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782434609] [2020-09-25 10:20:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:52,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:52,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-25 10:20:52,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:20:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:20:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:52,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 10:20:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:20:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:53,359 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 10:20:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:53,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:20:53,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 10:20:53,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:53,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:53,734 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 10:20:53,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782434609] [2020-09-25 10:20:53,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:53,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591432025] [2020-09-25 10:20:53,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:53,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:53,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:53,738 INFO L87 Difference]: Start difference. First operand 2505 states and 3021 transitions. Second operand 5 states. [2020-09-25 10:21:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:21:00,874 INFO L93 Difference]: Finished difference Result 6965 states and 8450 transitions. [2020-09-25 10:21:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:21:00,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-25 10:21:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:21:00,895 INFO L225 Difference]: With dead ends: 6965 [2020-09-25 10:21:00,896 INFO L226 Difference]: Without dead ends: 4675 [2020-09-25 10:21:00,901 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 10:21:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2020-09-25 10:21:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4560. [2020-09-25 10:21:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2020-09-25 10:21:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5519 transitions. [2020-09-25 10:21:01,076 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5519 transitions. Word has length 466 [2020-09-25 10:21:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:21:01,077 INFO L479 AbstractCegarLoop]: Abstraction has 4560 states and 5519 transitions. [2020-09-25 10:21:01,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:21:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5519 transitions. [2020-09-25 10:21:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-25 10:21:01,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:21:01,104 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] [2020-09-25 10:21:01,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:21:01,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:21:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:21:01,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1371642166, now seen corresponding path program 1 times [2020-09-25 10:21:01,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:21:01,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124291908] [2020-09-25 10:21:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:21:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:21:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking...