/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:37:38,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:37:38,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:37:38,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:37:38,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:37:38,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:37:38,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:37:38,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:37:38,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:37:38,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:37:38,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:37:38,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:37:38,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:37:38,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:37:38,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:37:38,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:37:38,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:37:38,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:37:38,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:37:38,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:37:38,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:37:38,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:37:38,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:37:38,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:37:38,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:37:38,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:37:38,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:37:38,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:37:38,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:37:38,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:37:38,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:37:38,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:37:38,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:37:38,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:37:38,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:37:38,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:37:38,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:37:38,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:37:38,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:37:38,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:37:38,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:37:38,447 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 04:37:38,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:37:38,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:37:38,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:37:38,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:37:38,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:37:38,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:37:38,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:37:38,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:37:38,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:37:38,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:37:38,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:37:38,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:37:38,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:37:38,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:37:38,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:37:38,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:37:38,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:37:38,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:37:38,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:37:38,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:37:38,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:37:38,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:37:38,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:37:38,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:37:38,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:37:38,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:37:38,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:37:38,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:37:38,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:37:38,501 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:37:38,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:37:38,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:37:38,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:37:38,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:37:38,980 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:37:38,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:37:39,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9d4d8d/1a3199eb1a744a4a9c0b91823c67710b/FLAGf888f776b [2020-09-25 04:37:39,753 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:37:39,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:37:39,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9d4d8d/1a3199eb1a744a4a9c0b91823c67710b/FLAGf888f776b [2020-09-25 04:37:39,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9d4d8d/1a3199eb1a744a4a9c0b91823c67710b [2020-09-25 04:37:39,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:37:40,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:37:40,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:37:40,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:37:40,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:37:40,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:37:39" (1/1) ... [2020-09-25 04:37:40,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40, skipping insertion in model container [2020-09-25 04:37:40,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:37:39" (1/1) ... [2020-09-25 04:37:40,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:37:40,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:37:40,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:37:40,683 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:37:40,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:37:40,867 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:37:40,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40 WrapperNode [2020-09-25 04:37:40,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:37:40,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:37:40,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:37:40,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:37:40,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (1/1) ... [2020-09-25 04:37:40,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:37:40,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:37:40,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:37:40,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:37:40,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (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 04:37:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:37:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:37:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:37:41,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:37:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:37:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:37:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 04:37:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 04:37:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 04:37:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:37:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:37:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 04:37:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 04:37:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 04:37:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 04:37:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 04:37:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 04:37:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 04:37:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:37:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:37:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:37:42,829 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:37:42,830 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:37:42,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:37:42 BoogieIcfgContainer [2020-09-25 04:37:42,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:37:42,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:37:42,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:37:42,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:37:42,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:37:39" (1/3) ... [2020-09-25 04:37:42,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd30d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:37:42, skipping insertion in model container [2020-09-25 04:37:42,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:40" (2/3) ... [2020-09-25 04:37:42,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd30d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:37:42, skipping insertion in model container [2020-09-25 04:37:42,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:37:42" (3/3) ... [2020-09-25 04:37:42,853 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:37:42,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:37:42,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:37:42,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:37:42,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:37:42,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:37:42,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:37:42,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:37:42,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:37:42,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:37:42,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:37:42,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:37:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 04:37:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-25 04:37:43,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:43,039 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] [2020-09-25 04:37:43,039 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-09-25 04:37:43,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:43,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174140935] [2020-09-25 04:37:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:48,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:48,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-09-25 04:37:48,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:37:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-09-25 04:37:48,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:37:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 04:37:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:37:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:37:49,414 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 04:37:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:49,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:37:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:37:49,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:49,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:49,874 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 04:37:49,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174140935] [2020-09-25 04:37:49,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:37:49,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:37:49,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273796469] [2020-09-25 04:37:49,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:37:49,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:49,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:37:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:37:49,911 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 04:37:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:55,183 INFO L93 Difference]: Finished difference Result 2068 states and 2752 transitions. [2020-09-25 04:37:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:37:55,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-09-25 04:37:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:55,215 INFO L225 Difference]: With dead ends: 2068 [2020-09-25 04:37:55,215 INFO L226 Difference]: Without dead ends: 1234 [2020-09-25 04:37:55,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:37:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-09-25 04:37:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1232. [2020-09-25 04:37:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-09-25 04:37:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1499 transitions. [2020-09-25 04:37:55,361 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1499 transitions. Word has length 407 [2020-09-25 04:37:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:55,363 INFO L479 AbstractCegarLoop]: Abstraction has 1232 states and 1499 transitions. [2020-09-25 04:37:55,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:37:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1499 transitions. [2020-09-25 04:37:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-25 04:37:55,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:55,383 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] [2020-09-25 04:37:55,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:37:55,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1185743993, now seen corresponding path program 1 times [2020-09-25 04:37:55,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:55,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107200153] [2020-09-25 04:37:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:00,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:00,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-25 04:38:00,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:38:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:38:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:00,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:38:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 04:38:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:38:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:00,821 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 04:38:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:38:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:38:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:38:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:38:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:00,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:38:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:38:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:38:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:01,117 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 04:38:01,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107200153] [2020-09-25 04:38:01,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:38:01,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:38:01,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679122826] [2020-09-25 04:38:01,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:38:01,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:38:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:38:01,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:01,123 INFO L87 Difference]: Start difference. First operand 1232 states and 1499 transitions. Second operand 4 states. [2020-09-25 04:38:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:38:04,208 INFO L93 Difference]: Finished difference Result 3339 states and 4125 transitions. [2020-09-25 04:38:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:38:04,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 408 [2020-09-25 04:38:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:38:04,221 INFO L225 Difference]: With dead ends: 3339 [2020-09-25 04:38:04,222 INFO L226 Difference]: Without dead ends: 2294 [2020-09-25 04:38:04,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-09-25 04:38:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1235. [2020-09-25 04:38:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 04:38:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1503 transitions. [2020-09-25 04:38:04,293 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1503 transitions. Word has length 408 [2020-09-25 04:38:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:38:04,295 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1503 transitions. [2020-09-25 04:38:04,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:38:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1503 transitions. [2020-09-25 04:38:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 04:38:04,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:38:04,304 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] [2020-09-25 04:38:04,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:38:04,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:38:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:38:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -801557755, now seen corresponding path program 1 times [2020-09-25 04:38:04,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:38:04,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565575126] [2020-09-25 04:38:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:38:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:05,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:09,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 04:38:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:38:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:38:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:09,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:38:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 04:38:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 04:38:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:09,763 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 04:38:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:38:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:09,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:09,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:38:09,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:38:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:38:09,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:09,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:38:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:38:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:38:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:10,050 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 04:38:10,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565575126] [2020-09-25 04:38:10,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:38:10,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:38:10,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032699349] [2020-09-25 04:38:10,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:38:10,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:38:10,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:38:10,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:10,053 INFO L87 Difference]: Start difference. First operand 1235 states and 1503 transitions. Second operand 4 states. [2020-09-25 04:38:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:38:14,444 INFO L93 Difference]: Finished difference Result 3077 states and 3800 transitions. [2020-09-25 04:38:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:38:14,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-09-25 04:38:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:38:14,456 INFO L225 Difference]: With dead ends: 3077 [2020-09-25 04:38:14,457 INFO L226 Difference]: Without dead ends: 2219 [2020-09-25 04:38:14,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-09-25 04:38:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2217. [2020-09-25 04:38:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-09-25 04:38:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2712 transitions. [2020-09-25 04:38:14,536 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2712 transitions. Word has length 409 [2020-09-25 04:38:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:38:14,536 INFO L479 AbstractCegarLoop]: Abstraction has 2217 states and 2712 transitions. [2020-09-25 04:38:14,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:38:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2712 transitions. [2020-09-25 04:38:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 04:38:14,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:38:14,544 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] [2020-09-25 04:38:14,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:38:14,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:38:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:38:14,545 INFO L82 PathProgramCache]: Analyzing trace with hash -146505083, now seen corresponding path program 1 times [2020-09-25 04:38:14,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:38:14,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657211353] [2020-09-25 04:38:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:38:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 04:38:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:38:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 04:38:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:19,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:38:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 04:38:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:38:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:20,195 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 04:38:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:38:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:38:20,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:38:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:38:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:20,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:38:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:38:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:38:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:20,548 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 04:38:20,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657211353] [2020-09-25 04:38:20,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:38:20,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:38:20,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81989243] [2020-09-25 04:38:20,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:38:20,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:38:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:38:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:38:20,551 INFO L87 Difference]: Start difference. First operand 2217 states and 2712 transitions. Second operand 5 states. [2020-09-25 04:38:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:38:25,220 INFO L93 Difference]: Finished difference Result 3883 states and 4792 transitions. [2020-09-25 04:38:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:38:25,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-09-25 04:38:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:38:25,232 INFO L225 Difference]: With dead ends: 3883 [2020-09-25 04:38:25,232 INFO L226 Difference]: Without dead ends: 2389 [2020-09-25 04:38:25,235 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 04:38:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-09-25 04:38:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2218. [2020-09-25 04:38:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-09-25 04:38:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2714 transitions. [2020-09-25 04:38:25,323 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2714 transitions. Word has length 409 [2020-09-25 04:38:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:38:25,324 INFO L479 AbstractCegarLoop]: Abstraction has 2218 states and 2714 transitions. [2020-09-25 04:38:25,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:38:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2714 transitions. [2020-09-25 04:38:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-25 04:38:25,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:38:25,330 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] [2020-09-25 04:38:25,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:38:25,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:38:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:38:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash -870506186, now seen corresponding path program 1 times [2020-09-25 04:38:25,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:38:25,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646918366] [2020-09-25 04:38:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:38:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking...