/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:42:35,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:42:35,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:42:35,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:42:35,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:42:35,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:42:35,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:42:35,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:42:35,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:42:35,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:42:35,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:42:35,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:42:35,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:42:35,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:42:35,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:42:35,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:42:35,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:42:35,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:42:35,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:42:35,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:42:35,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:42:35,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:42:35,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:42:35,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:42:35,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:42:35,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:42:35,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:42:35,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:42:35,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:42:35,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:42:35,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:42:35,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:42:35,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:42:35,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:42:35,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:42:35,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:42:35,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:42:35,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:42:35,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:42:35,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:42:35,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:42:35,899 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 13:42:35,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:42:35,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:42:35,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:42:35,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:42:35,949 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:42:35,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:42:35,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:42:35,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:42:35,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:42:35,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:42:35,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:42:35,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:42:35,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:42:35,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:42:35,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:42:35,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:42:35,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:42:35,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:42:35,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:42:35,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:42:35,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:42:35,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:42:35,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:42:35,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:42:35,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:42:35,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:42:35,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:42:35,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:42:35,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:42:35,959 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:42:36,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:42:36,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:42:36,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:42:36,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:42:36,451 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:42:36,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 13:42:36,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f02d1bd7/2336e4e441fb423e9dae68367e47ae2f/FLAGd6a9868bb [2020-09-25 13:42:37,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:42:37,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 13:42:37,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f02d1bd7/2336e4e441fb423e9dae68367e47ae2f/FLAGd6a9868bb [2020-09-25 13:42:37,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f02d1bd7/2336e4e441fb423e9dae68367e47ae2f [2020-09-25 13:42:37,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:42:37,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:42:37,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:37,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:42:37,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:42:37,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:37" (1/1) ... [2020-09-25 13:42:37,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c63137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:37, skipping insertion in model container [2020-09-25 13:42:37,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:37" (1/1) ... [2020-09-25 13:42:37,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:42:37,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:42:38,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:38,660 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:42:39,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:39,246 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:42:39,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39 WrapperNode [2020-09-25 13:42:39,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:39,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:42:39,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:42:39,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:42:39,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (1/1) ... [2020-09-25 13:42:39,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:42:39,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:42:39,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:42:39,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:42:39,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (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 13:42:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:42:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:42:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:42:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:42:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:42:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:42:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:42:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 13:42:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:42:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:42:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 13:42:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 13:42:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 13:42:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 13:42:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 13:42:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 13:42:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 13:42:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 13:42:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:42:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:42:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:42:43,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:42:43,041 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:42:43,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:43 BoogieIcfgContainer [2020-09-25 13:42:43,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:42:43,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:42:43,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:42:43,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:42:43,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:42:37" (1/3) ... [2020-09-25 13:42:43,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f4123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:43, skipping insertion in model container [2020-09-25 13:42:43,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:39" (2/3) ... [2020-09-25 13:42:43,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f4123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:43, skipping insertion in model container [2020-09-25 13:42:43,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:43" (3/3) ... [2020-09-25 13:42:43,076 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 13:42:43,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:42:43,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:42:43,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:42:43,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:42:43,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:42:43,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:42:43,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:42:43,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:42:43,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:42:43,182 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:42:43,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:42:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-25 13:42:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 13:42:43,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:42:43,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:43,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:43,352 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-25 13:42:43,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:43,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506607679] [2020-09-25 13:42:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 13:42:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:42:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 13:42:49,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:49,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:42:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-09-25 13:42:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-09-25 13:42:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:42:50,772 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 13:42:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:42:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:42:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:42:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:42:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:42:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:42:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:42:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:42:52,028 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 13:42:52,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506607679] [2020-09-25 13:42:52,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:42:52,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:42:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3693197] [2020-09-25 13:42:52,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:42:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:42:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:42:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:42:52,060 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 4 states. [2020-09-25 13:43:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:43:01,330 INFO L93 Difference]: Finished difference Result 3529 states and 4643 transitions. [2020-09-25 13:43:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:43:01,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 932 [2020-09-25 13:43:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:43:01,375 INFO L225 Difference]: With dead ends: 3529 [2020-09-25 13:43:01,375 INFO L226 Difference]: Without dead ends: 2855 [2020-09-25 13:43:01,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:43:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-09-25 13:43:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2020-09-25 13:43:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-09-25 13:43:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-09-25 13:43:01,572 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 932 [2020-09-25 13:43:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:43:01,575 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-09-25 13:43:01,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:43:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-09-25 13:43:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 13:43:01,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:43:01,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:01,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:43:01,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:43:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:43:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1335477111, now seen corresponding path program 1 times [2020-09-25 13:43:01,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:43:01,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406620436] [2020-09-25 13:43:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:43:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:07,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 13:43:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:43:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-09-25 13:43:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:07,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:43:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-09-25 13:43:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 272 [2020-09-25 13:43:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 13:43:08,767 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 13:43:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:43:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:08,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:43:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:43:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:43:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:08,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:43:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:43:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:43:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:43:10,135 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 13:43:10,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406620436] [2020-09-25 13:43:10,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:43:10,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:43:10,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779799766] [2020-09-25 13:43:10,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:43:10,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:43:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:43:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:43:10,140 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 5 states. [2020-09-25 13:43:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:43:22,791 INFO L93 Difference]: Finished difference Result 7814 states and 9916 transitions. [2020-09-25 13:43:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:43:22,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-25 13:43:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:43:22,818 INFO L225 Difference]: With dead ends: 7814 [2020-09-25 13:43:22,818 INFO L226 Difference]: Without dead ends: 5280 [2020-09-25 13:43:22,824 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 13:43:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2020-09-25 13:43:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 5278. [2020-09-25 13:43:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5278 states. [2020-09-25 13:43:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 6653 transitions. [2020-09-25 13:43:22,969 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 6653 transitions. Word has length 932 [2020-09-25 13:43:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:43:22,969 INFO L479 AbstractCegarLoop]: Abstraction has 5278 states and 6653 transitions. [2020-09-25 13:43:22,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:43:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 6653 transitions. [2020-09-25 13:43:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 13:43:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:43:22,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:43:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:43:22,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:43:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:43:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash -518596719, now seen corresponding path program 1 times [2020-09-25 13:43:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:43:22,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073324254] [2020-09-25 13:43:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:43:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking...