/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/eca-rers2012/Problem02_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:16,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:16,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:16,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:16,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:16,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:16,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:16,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:16,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:16,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:16,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:16,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:16,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:16,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:16,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:16,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:16,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:16,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:16,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:17,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:17,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:17,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:17,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:17,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:17,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:17,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:17,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:17,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:17,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:17,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:17,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:17,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:17,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:17,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:17,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:17,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:17,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:17,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:17,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:17,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:17,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:17,033 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 04:27:17,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:17,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:17,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:17,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:17,061 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:17,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:17,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:17,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:17,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:17,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:17,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:17,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:17,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:17,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:17,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:17,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:17,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:17,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:17,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:17,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:17,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:17,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:17,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:17,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:17,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:17,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:17,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:17,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:17,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:17,066 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 04:27:17,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:17,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:17,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:17,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:17,553 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:17,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 04:27:17,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4149053da/61532e0a66b3431baa7110cd04fc91eb/FLAGda9608862 [2020-09-25 04:27:18,286 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:18,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 04:27:18,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4149053da/61532e0a66b3431baa7110cd04fc91eb/FLAGda9608862 [2020-09-25 04:27:18,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4149053da/61532e0a66b3431baa7110cd04fc91eb [2020-09-25 04:27:18,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:18,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:18,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:18,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:18,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:18,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:18" (1/1) ... [2020-09-25 04:27:18,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:18, skipping insertion in model container [2020-09-25 04:27:18,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:18" (1/1) ... [2020-09-25 04:27:18,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:18,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:19,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:19,120 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:19,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:19,373 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:19,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19 WrapperNode [2020-09-25 04:27:19,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:19,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:19,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:19,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:19,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (1/1) ... [2020-09-25 04:27:19,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:19,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:19,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:19,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:19,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (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 04:27:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:20,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:20,920 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:20,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:20 BoogieIcfgContainer [2020-09-25 04:27:20,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:20,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:20,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:20,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:20,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:18" (1/3) ... [2020-09-25 04:27:20,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:20, skipping insertion in model container [2020-09-25 04:27:20,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:19" (2/3) ... [2020-09-25 04:27:20,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:20, skipping insertion in model container [2020-09-25 04:27:20,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:20" (3/3) ... [2020-09-25 04:27:20,949 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-25 04:27:20,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:20,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:20,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:21,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:21,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:21,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:21,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:21,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:21,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:21,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:21,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 04:27:21,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:21,093 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] [2020-09-25 04:27:21,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-25 04:27:21,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:21,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760628592] [2020-09-25 04:27:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:26,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 04:27:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:27:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:27:26,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:26,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:26,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:26,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 04:27:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:27:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:26,735 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 04:27:26,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760628592] [2020-09-25 04:27:26,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:26,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:26,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645070675] [2020-09-25 04:27:26,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:26,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:26,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:26,779 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:28,993 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:27:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:28,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-09-25 04:27:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:29,036 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:27:29,037 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:27:29,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:27:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:27:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:27:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:27:29,173 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 145 [2020-09-25 04:27:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:29,174 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:27:29,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:27:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:27:29,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:29,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:29,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:29,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1676334790, now seen corresponding path program 1 times [2020-09-25 04:27:29,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:29,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220626973] [2020-09-25 04:27:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 04:27:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:27:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:27:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 04:27:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:27:34,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:34,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:34,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:34,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:27:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:34,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220626973] [2020-09-25 04:27:34,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:34,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:34,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852806521] [2020-09-25 04:27:34,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:34,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:34,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:34,554 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:27:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:36,109 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 04:27:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:36,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 04:27:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:36,119 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 04:27:36,120 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:27:36,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:27:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 04:27:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 04:27:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 04:27:36,159 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 163 [2020-09-25 04:27:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:36,160 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 04:27:36,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 04:27:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:27:36,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:36,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:36,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:36,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash -48105695, now seen corresponding path program 1 times [2020-09-25 04:27:36,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:36,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46947840] [2020-09-25 04:27:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:27:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:27:41,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:41,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:27:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 04:27:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:27:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:41,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:27:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:27:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:27:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:27:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:41,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46947840] [2020-09-25 04:27:41,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:41,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:41,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536880748] [2020-09-25 04:27:41,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:41,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:41,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:41,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:41,497 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 04:27:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:43,547 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 04:27:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:43,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 04:27:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:43,566 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 04:27:43,567 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 04:27:43,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 04:27:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 04:27:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 04:27:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 04:27:43,741 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 171 [2020-09-25 04:27:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:43,751 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 04:27:43,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 04:27:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 04:27:43,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:43,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:43,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:43,768 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:43,769 INFO L82 PathProgramCache]: Analyzing trace with hash 587130536, now seen corresponding path program 1 times [2020-09-25 04:27:43,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:43,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238663263] [2020-09-25 04:27:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 04:27:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:27:48,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:48,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:27:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:27:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:48,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:48,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:27:48,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:48,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:48,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:27:48,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:27:48,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:48,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:27:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 04:27:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:49,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:49,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:27:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:49,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:27:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:49,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238663263] [2020-09-25 04:27:49,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:49,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:49,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367003506] [2020-09-25 04:27:49,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:49,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:49,164 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 04:27:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:51,866 INFO L93 Difference]: Finished difference Result 3782 states and 5386 transitions. [2020-09-25 04:27:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:51,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-25 04:27:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:51,886 INFO L225 Difference]: With dead ends: 3782 [2020-09-25 04:27:51,886 INFO L226 Difference]: Without dead ends: 2535 [2020-09-25 04:27:51,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2020-09-25 04:27:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2370. [2020-09-25 04:27:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2370 states. [2020-09-25 04:27:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3062 transitions. [2020-09-25 04:27:52,004 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3062 transitions. Word has length 220 [2020-09-25 04:27:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:52,005 INFO L479 AbstractCegarLoop]: Abstraction has 2370 states and 3062 transitions. [2020-09-25 04:27:52,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3062 transitions. [2020-09-25 04:27:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 04:27:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:52,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:52,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:52,019 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash 329651812, now seen corresponding path program 1 times [2020-09-25 04:27:52,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:52,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518944169] [2020-09-25 04:27:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 04:27:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:27:57,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 04:27:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:27:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:27:57,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:27:57,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:27:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:27:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:57,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518944169] [2020-09-25 04:27:57,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:57,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350006326] [2020-09-25 04:27:57,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:57,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:57,373 INFO L87 Difference]: Start difference. First operand 2370 states and 3062 transitions. Second operand 8 states. [2020-09-25 04:28:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:00,400 INFO L93 Difference]: Finished difference Result 5718 states and 7802 transitions. [2020-09-25 04:28:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:28:00,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 04:28:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:00,418 INFO L225 Difference]: With dead ends: 5718 [2020-09-25 04:28:00,418 INFO L226 Difference]: Without dead ends: 3370 [2020-09-25 04:28:00,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:28:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2020-09-25 04:28:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3138. [2020-09-25 04:28:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-09-25 04:28:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4055 transitions. [2020-09-25 04:28:00,519 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4055 transitions. Word has length 223 [2020-09-25 04:28:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:00,520 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4055 transitions. [2020-09-25 04:28:00,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:28:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4055 transitions. [2020-09-25 04:28:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 04:28:00,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:00,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:00,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:00,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1859791105, now seen corresponding path program 1 times [2020-09-25 04:28:00,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:00,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192104048] [2020-09-25 04:28:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 04:28:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:28:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:28:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:28:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:28:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:05,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:28:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:28:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:28:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:28:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:28:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:28:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:28:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:28:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:28:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:28:05,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192104048] [2020-09-25 04:28:05,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:05,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:05,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366571216] [2020-09-25 04:28:05,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:05,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:05,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:05,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:05,983 INFO L87 Difference]: Start difference. First operand 3138 states and 4055 transitions. Second operand 7 states.