/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=0.5 --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 14:50:12,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:50:12,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:50:12,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:50:12,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:50:12,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:50:12,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:50:12,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:50:12,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:50:12,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:50:12,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:50:12,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:50:12,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:50:12,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:50:12,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:50:12,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:50:12,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:50:12,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:50:12,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:50:12,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:50:12,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:50:12,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:50:12,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:50:12,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:50:12,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:50:12,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:50:12,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:50:12,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:50:12,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:50:12,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:50:12,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:50:12,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:50:12,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:50:12,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:50:12,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:50:12,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:50:12,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:50:12,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:50:12,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:50:12,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:50:12,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:50:12,296 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 14:50:12,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:50:12,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:50:12,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:50:12,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:50:12,324 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:50:12,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:50:12,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:50:12,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:50:12,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:50:12,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:50:12,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:50:12,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:50:12,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:50:12,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:50:12,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:50:12,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:50:12,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:50:12,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:50:12,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:50:12,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:50:12,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:50:12,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:50:12,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:50:12,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:50:12,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:50:12,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:50:12,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:50:12,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:50:12,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:50:12,329 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:50:12,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:50:12,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:50:12,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:50:12,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:50:12,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:50:12,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 14:50:12,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab7e6b0/e70c0f011b74427c8c604388ccecc27c/FLAG1d0398493 [2020-09-25 14:50:13,615 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:50:13,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 14:50:13,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab7e6b0/e70c0f011b74427c8c604388ccecc27c/FLAG1d0398493 [2020-09-25 14:50:13,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab7e6b0/e70c0f011b74427c8c604388ccecc27c [2020-09-25 14:50:13,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:50:13,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:50:13,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:50:13,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:50:13,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:50:13,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:50:13" (1/1) ... [2020-09-25 14:50:13,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:13, skipping insertion in model container [2020-09-25 14:50:13,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:50:13" (1/1) ... [2020-09-25 14:50:13,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:50:13,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:50:14,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:50:14,712 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:50:15,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:50:15,244 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:50:15,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15 WrapperNode [2020-09-25 14:50:15,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:50:15,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:50:15,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:50:15,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:50:15,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (1/1) ... [2020-09-25 14:50:15,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:50:15,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:50:15,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:50:15,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:50:15,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (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 14:50:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:50:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:50:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:50:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:50:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:50:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:50:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 14:50:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 14:50:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:50:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:50:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 14:50:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 14:50:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 14:50:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 14:50:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 14:50:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 14:50:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 14:50:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:50:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:50:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:50:17,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:50:17,809 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:50:17,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:50:17 BoogieIcfgContainer [2020-09-25 14:50:17,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:50:17,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:50:17,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:50:17,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:50:17,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:50:13" (1/3) ... [2020-09-25 14:50:17,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5dfa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:50:17, skipping insertion in model container [2020-09-25 14:50:17,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:50:15" (2/3) ... [2020-09-25 14:50:17,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5dfa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:50:17, skipping insertion in model container [2020-09-25 14:50:17,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:50:17" (3/3) ... [2020-09-25 14:50:17,835 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 14:50:17,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:50:17,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 14:50:17,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 14:50:17,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:50:17,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:50:17,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:50:17,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:50:17,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:50:17,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:50:17,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:50:17,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:50:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-25 14:50:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 14:50:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:18,013 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 14:50:18,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-25 14:50:18,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:18,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517419494] [2020-09-25 14:50:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:20,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:23,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:23,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 14:50:23,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:50:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 14:50:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:23,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:50:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 14:50:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 14:50:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:50:24,365 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 14:50:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:50:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:50:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 14:50:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:24,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:24,764 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 14:50:24,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517419494] [2020-09-25 14:50:24,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:24,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:50:24,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265435500] [2020-09-25 14:50:24,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:50:24,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:24,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:50:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:50:24,799 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-25 14:50:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:29,945 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-25 14:50:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:50:29,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-25 14:50:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:29,981 INFO L225 Difference]: With dead ends: 2024 [2020-09-25 14:50:29,981 INFO L226 Difference]: Without dead ends: 1455 [2020-09-25 14:50:29,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:50:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-25 14:50:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-25 14:50:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-25 14:50:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-25 14:50:30,120 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-25 14:50:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:50:30,122 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-25 14:50:30,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:50:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-25 14:50:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 14:50:30,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:30,135 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 14:50:30,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:50:30,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-25 14:50:30,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:30,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967106340] [2020-09-25 14:50:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:30,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 14:50:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:50:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-09-25 14:50:35,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:35,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:50:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 14:50:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:50:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:50:36,180 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 14:50:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:50:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:36,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:36,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:50:36,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:50:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:36,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:36,589 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 14:50:36,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967106340] [2020-09-25 14:50:36,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:36,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:50:36,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112568689] [2020-09-25 14:50:36,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:50:36,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:50:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:50:36,596 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-25 14:50:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:43,328 INFO L93 Difference]: Finished difference Result 3862 states and 4652 transitions. [2020-09-25 14:50:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:50:43,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-25 14:50:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:43,345 INFO L225 Difference]: With dead ends: 3862 [2020-09-25 14:50:43,346 INFO L226 Difference]: Without dead ends: 2630 [2020-09-25 14:50:43,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:50:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-09-25 14:50:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2503. [2020-09-25 14:50:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-09-25 14:50:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3018 transitions. [2020-09-25 14:50:43,455 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3018 transitions. Word has length 465 [2020-09-25 14:50:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:50:43,456 INFO L479 AbstractCegarLoop]: Abstraction has 2503 states and 3018 transitions. [2020-09-25 14:50:43,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:50:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3018 transitions. [2020-09-25 14:50:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-25 14:50:43,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:43,463 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 14:50:43,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:50:43,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:43,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1155003978, now seen corresponding path program 1 times [2020-09-25 14:50:43,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:43,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683292878] [2020-09-25 14:50:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:43,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-25 14:50:48,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:50:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 14:50:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:50:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-09-25 14:50:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 14:50:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:49,160 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 14:50:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:50:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:49,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:50:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 14:50:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:49,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:49,962 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 14:50:49,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683292878] [2020-09-25 14:50:49,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:49,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:50:49,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456373741] [2020-09-25 14:50:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:50:49,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:50:49,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:50:49,974 INFO L87 Difference]: Start difference. First operand 2503 states and 3018 transitions. Second operand 5 states. [2020-09-25 14:50:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:57,340 INFO L93 Difference]: Finished difference Result 6741 states and 8171 transitions. [2020-09-25 14:50:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:50:57,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-25 14:50:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:57,364 INFO L225 Difference]: With dead ends: 6741 [2020-09-25 14:50:57,364 INFO L226 Difference]: Without dead ends: 4685 [2020-09-25 14:50:57,369 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 14:50:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2020-09-25 14:50:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4558. [2020-09-25 14:50:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4558 states. [2020-09-25 14:50:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4558 states to 4558 states and 5520 transitions. [2020-09-25 14:50:57,535 INFO L78 Accepts]: Start accepts. Automaton has 4558 states and 5520 transitions. Word has length 466 [2020-09-25 14:50:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:50:57,536 INFO L479 AbstractCegarLoop]: Abstraction has 4558 states and 5520 transitions. [2020-09-25 14:50:57,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:50:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states and 5520 transitions. [2020-09-25 14:50:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-25 14:50:57,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:57,552 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 14:50:57,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:50:57,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash -717299890, now seen corresponding path program 1 times [2020-09-25 14:50:57,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:57,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978472386] [2020-09-25 14:50:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking...