/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=1.0 --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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:02:38,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:02:38,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:02:38,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:02:38,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:02:39,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:02:39,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:02:39,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:02:39,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:02:39,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:02:39,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:02:39,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:02:39,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:02:39,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:02:39,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:02:39,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:02:39,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:02:39,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:02:39,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:02:39,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:02:39,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:02:39,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:02:39,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:02:39,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:02:39,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:02:39,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:02:39,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:02:39,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:02:39,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:02:39,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:02:39,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:02:39,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:02:39,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:02:39,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:02:39,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:02:39,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:02:39,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:02:39,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:02:39,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:02:39,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:02:39,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:02:39,082 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 09:02:39,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:02:39,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:02:39,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:02:39,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:02:39,127 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:02:39,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:02:39,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:02:39,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:02:39,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:02:39,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:02:39,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:02:39,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:02:39,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:02:39,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:02:39,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:02:39,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:02:39,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:02:39,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:02:39,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:02:39,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:02:39,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:02:39,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:02:39,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:02:39,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:02:39,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:02:39,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:02:39,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:02:39,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:02:39,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:02:39,134 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:02:39,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:02:39,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:02:39,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:02:39,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:02:39,640 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:02:39,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 09:02:39,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d38273169/1731227a99df4f898b215f9329cd9f24/FLAG9e870230d [2020-09-25 09:02:40,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:02:40,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 09:02:40,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d38273169/1731227a99df4f898b215f9329cd9f24/FLAG9e870230d [2020-09-25 09:02:40,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d38273169/1731227a99df4f898b215f9329cd9f24 [2020-09-25 09:02:40,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:02:40,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:02:40,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:40,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:02:40,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:02:40,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:40" (1/1) ... [2020-09-25 09:02:40,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:40, skipping insertion in model container [2020-09-25 09:02:40,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:40" (1/1) ... [2020-09-25 09:02:40,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:02:40,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:02:41,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:41,236 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:02:41,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:41,468 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:02:41,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41 WrapperNode [2020-09-25 09:02:41,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:41,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:02:41,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:02:41,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:02:41,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (1/1) ... [2020-09-25 09:02:41,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:02:41,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:02:41,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:02:41,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:02:41,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (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 09:02:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:02:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:02:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:02:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:02:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:02:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:02:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:02:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:02:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:02:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:02:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:02:43,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:02:43,111 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:02:43,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:43 BoogieIcfgContainer [2020-09-25 09:02:43,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:02:43,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:02:43,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:02:43,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:02:43,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:02:40" (1/3) ... [2020-09-25 09:02:43,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:43, skipping insertion in model container [2020-09-25 09:02:43,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:41" (2/3) ... [2020-09-25 09:02:43,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:43, skipping insertion in model container [2020-09-25 09:02:43,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:43" (3/3) ... [2020-09-25 09:02:43,134 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-09-25 09:02:43,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:02:43,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:02:43,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:02:43,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:02:43,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:02:43,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:02:43,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:02:43,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:02:43,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:02:43,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:02:43,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:02:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:02:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 09:02:43,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:43,303 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] [2020-09-25 09:02:43,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 405983745, now seen corresponding path program 1 times [2020-09-25 09:02:43,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:43,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235266026] [2020-09-25 09:02:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 09:02:48,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:02:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:02:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 09:02:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 09:02:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:48,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:02:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:48,870 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 09:02:48,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235266026] [2020-09-25 09:02:48,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:48,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:02:48,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079588725] [2020-09-25 09:02:48,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:02:48,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:02:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:02:48,902 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:02:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:51,354 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 09:02:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:02:51,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-09-25 09:02:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:51,413 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 09:02:51,414 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 09:02:51,425 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 09:02:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 09:02:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 09:02:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 09:02:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 09:02:51,541 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 118 [2020-09-25 09:02:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:51,543 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 09:02:51,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:02:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 09:02:51,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 09:02:51,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:51,552 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] [2020-09-25 09:02:51,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:51,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:51,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1821694635, now seen corresponding path program 1 times [2020-09-25 09:02:51,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:51,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685725686] [2020-09-25 09:02:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:02:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:02:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:02:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:56,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:02:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:02:56,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:56,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:56,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:56,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:02:56,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:56,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:02:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:56,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:02:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:56,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:02:56,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685725686] [2020-09-25 09:02:56,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:56,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:02:56,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072611537] [2020-09-25 09:02:56,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:02:56,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:02:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:56,956 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 09:02:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:58,878 INFO L93 Difference]: Finished difference Result 1611 states and 2069 transitions. [2020-09-25 09:02:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:02:58,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 09:02:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:58,887 INFO L225 Difference]: With dead ends: 1611 [2020-09-25 09:02:58,887 INFO L226 Difference]: Without dead ends: 974 [2020-09-25 09:02:58,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-09-25 09:02:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 964. [2020-09-25 09:02:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-09-25 09:02:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1229 transitions. [2020-09-25 09:02:58,935 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1229 transitions. Word has length 136 [2020-09-25 09:02:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:58,936 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1229 transitions. [2020-09-25 09:02:58,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:02:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1229 transitions. [2020-09-25 09:02:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:02:58,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:58,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:02:58,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:58,943 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1653572791, now seen corresponding path program 1 times [2020-09-25 09:02:58,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:58,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578358600] [2020-09-25 09:02:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:02,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:03:02,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:03:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3931 [2020-09-25 09:03:02,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:02,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 09:03:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:03:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:03,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:03,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:03,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:03:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:03,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:03,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:03,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:03,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:03:03,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:03,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:03:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:03,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578358600] [2020-09-25 09:03:03,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:03,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:03,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623977082] [2020-09-25 09:03:03,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:03,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:03,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:03,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:03,233 INFO L87 Difference]: Start difference. First operand 964 states and 1229 transitions. Second operand 5 states. [2020-09-25 09:03:03,709 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-09-25 09:03:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:05,576 INFO L93 Difference]: Finished difference Result 2520 states and 3344 transitions. [2020-09-25 09:03:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:05,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 09:03:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:05,585 INFO L225 Difference]: With dead ends: 2520 [2020-09-25 09:03:05,586 INFO L226 Difference]: Without dead ends: 1201 [2020-09-25 09:03:05,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 09:03:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-09-25 09:03:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2020-09-25 09:03:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 09:03:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1444 transitions. [2020-09-25 09:03:05,632 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1444 transitions. Word has length 156 [2020-09-25 09:03:05,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:05,633 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1444 transitions. [2020-09-25 09:03:05,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1444 transitions. [2020-09-25 09:03:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:03:05,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:05,639 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 09:03:05,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:05,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:05,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1367701794, now seen corresponding path program 1 times [2020-09-25 09:03:05,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:05,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494317156] [2020-09-25 09:03:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 09:03:10,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:03:10,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:03:10,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:03:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 09:03:10,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:10,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:03:10,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:10,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:03:10,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:10,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:03:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:03:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:03:10,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:10,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:03:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:03:10,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494317156] [2020-09-25 09:03:10,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:10,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:10,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069697005] [2020-09-25 09:03:10,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:10,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:10,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:10,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:10,953 INFO L87 Difference]: Start difference. First operand 1190 states and 1444 transitions. Second operand 5 states. [2020-09-25 09:03:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:12,860 INFO L93 Difference]: Finished difference Result 3150 states and 3906 transitions. [2020-09-25 09:03:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:12,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 09:03:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:12,874 INFO L225 Difference]: With dead ends: 3150 [2020-09-25 09:03:12,874 INFO L226 Difference]: Without dead ends: 1671 [2020-09-25 09:03:12,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:03:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2020-09-25 09:03:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1639. [2020-09-25 09:03:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-09-25 09:03:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 1951 transitions. [2020-09-25 09:03:12,946 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 1951 transitions. Word has length 182 [2020-09-25 09:03:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:12,947 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 1951 transitions. [2020-09-25 09:03:12,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 1951 transitions. [2020-09-25 09:03:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 09:03:12,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:12,957 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, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:03:12,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:12,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:12,958 INFO L82 PathProgramCache]: Analyzing trace with hash 709745354, now seen corresponding path program 1 times [2020-09-25 09:03:12,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:12,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069345129] [2020-09-25 09:03:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 09:03:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:03:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:18,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 09:03:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:03:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:18,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:03:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:18,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:03:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:03:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 09:03:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:03:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 09:03:18,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069345129] [2020-09-25 09:03:18,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:18,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:18,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433364664] [2020-09-25 09:03:18,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:18,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:18,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:18,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:18,350 INFO L87 Difference]: Start difference. First operand 1639 states and 1951 transitions. Second operand 5 states. [2020-09-25 09:03:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:20,215 INFO L93 Difference]: Finished difference Result 4570 states and 5562 transitions. [2020-09-25 09:03:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:20,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-09-25 09:03:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:20,234 INFO L225 Difference]: With dead ends: 4570 [2020-09-25 09:03:20,234 INFO L226 Difference]: Without dead ends: 2953 [2020-09-25 09:03:20,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-09-25 09:03:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2250. [2020-09-25 09:03:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-09-25 09:03:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2716 transitions. [2020-09-25 09:03:20,343 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2716 transitions. Word has length 207 [2020-09-25 09:03:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:20,344 INFO L479 AbstractCegarLoop]: Abstraction has 2250 states and 2716 transitions. [2020-09-25 09:03:20,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2716 transitions. [2020-09-25 09:03:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 09:03:20,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:20,355 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:03:20,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:03:20,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1650988844, now seen corresponding path program 1 times [2020-09-25 09:03:20,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:20,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384777049] [2020-09-25 09:03:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 09:03:25,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 09:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 09:03:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:03:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:25,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:03:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:25,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:03:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:03:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 09:03:25,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384777049] [2020-09-25 09:03:25,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:25,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:25,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372139097] [2020-09-25 09:03:25,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:25,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:25,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:25,773 INFO L87 Difference]: Start difference. First operand 2250 states and 2716 transitions. Second operand 5 states. [2020-09-25 09:03:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:27,725 INFO L93 Difference]: Finished difference Result 5466 states and 6729 transitions. [2020-09-25 09:03:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:27,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-09-25 09:03:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:27,733 INFO L225 Difference]: With dead ends: 5466 [2020-09-25 09:03:27,733 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:03:27,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:03:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:03:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:03:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:03:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:03:27,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2020-09-25 09:03:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:27,749 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:03:27,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:03:27,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:03:27,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:03:27,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.