/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=0.6 --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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:37,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:37,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:37,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:37,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:37,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:37,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:37,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:37,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:37,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:37,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:37,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:37,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:37,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:37,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:37,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:37,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:37,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:37,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:37,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:37,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:37,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:37,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:37,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:37,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:37,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:37,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:37,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:37,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:37,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:37,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:37,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:37,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:37,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:37,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:37,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:37,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:37,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:37,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:37,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:37,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:37,450 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 06:44:37,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:37,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:37,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:37,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:37,506 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:37,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:37,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:37,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:37,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:37,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:37,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:37,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:37,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:37,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:37,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:37,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:37,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:37,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:37,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:37,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:37,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:37,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:37,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:37,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:37,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:37,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:37,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:37,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:37,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:37,513 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:44:37,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:37,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:37,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:37,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:37,981 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:37,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 06:44:38,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89998c56b/da2f21abe2b34aadbdc655195d2509c9/FLAG69fda7f64 [2020-09-25 06:44:38,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:38,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 06:44:38,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89998c56b/da2f21abe2b34aadbdc655195d2509c9/FLAG69fda7f64 [2020-09-25 06:44:38,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89998c56b/da2f21abe2b34aadbdc655195d2509c9 [2020-09-25 06:44:39,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:39,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:39,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:39,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:39,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:39,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39, skipping insertion in model container [2020-09-25 06:44:39,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:39,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:39,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:39,602 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:39,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:39,819 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:39,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39 WrapperNode [2020-09-25 06:44:39,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:39,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:39,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:39,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:39,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... [2020-09-25 06:44:39,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:39,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:39,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:39,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:39,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:40,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:40,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:40,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:40,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:41,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:41,343 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:41,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:41 BoogieIcfgContainer [2020-09-25 06:44:41,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:41,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:41,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:41,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:41,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:39" (1/3) ... [2020-09-25 06:44:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:41, skipping insertion in model container [2020-09-25 06:44:41,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:39" (2/3) ... [2020-09-25 06:44:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:41, skipping insertion in model container [2020-09-25 06:44:41,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:41" (3/3) ... [2020-09-25 06:44:41,362 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-25 06:44:41,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:41,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:41,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:41,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:41,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:41,443 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:41,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:41,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:41,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:41,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:41,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 06:44:41,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:41,499 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] [2020-09-25 06:44:41,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-25 06:44:41,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:41,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 06:44:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:44:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:44:46,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:46,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:44:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 06:44:46,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:44:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:47,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:47,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:44:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:47,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:44:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:44:47,175 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 06:44:47,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 06:44:47,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:47,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:47,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114488053] [2020-09-25 06:44:47,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:47,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:47,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:47,218 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:49,988 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:44:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:49,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 06:44:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:50,037 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:44:50,038 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:44:50,054 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 06:44:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:44:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:44:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:44:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:44:50,200 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 122 [2020-09-25 06:44:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:50,201 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:44:50,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:44:50,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:44:50,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:50,209 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] [2020-09-25 06:44:50,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:50,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash -54057051, now seen corresponding path program 1 times [2020-09-25 06:44:50,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:50,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611837568] [2020-09-25 06:44:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:44:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:44:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:44:55,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:55,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:44:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:55,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:55,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:55,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:44:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:44:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:55,549 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 06:44:55,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611837568] [2020-09-25 06:44:55,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:55,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:55,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194396013] [2020-09-25 06:44:55,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:55,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:55,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:55,556 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:44:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:57,206 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 06:44:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:57,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 06:44:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:57,215 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 06:44:57,215 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:44:57,218 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 06:44:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:44:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 06:44:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 06:44:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 06:44:57,259 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 140 [2020-09-25 06:44:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:57,260 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 06:44:57,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 06:44:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 06:44:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:57,265 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] [2020-09-25 06:44:57,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:57,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:57,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1331654230, now seen corresponding path program 1 times [2020-09-25 06:44:57,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:57,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028431827] [2020-09-25 06:44:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:45:00,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:00,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3286 [2020-09-25 06:45:00,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 06:45:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:45:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:00,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:45:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:45:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:00,784 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 06:45:00,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028431827] [2020-09-25 06:45:00,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:00,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:00,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988421816] [2020-09-25 06:45:00,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:00,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:00,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:00,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:00,787 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 06:45:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:03,101 INFO L93 Difference]: Finished difference Result 2102 states and 2820 transitions. [2020-09-25 06:45:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:03,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 06:45:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:03,118 INFO L225 Difference]: With dead ends: 2102 [2020-09-25 06:45:03,118 INFO L226 Difference]: Without dead ends: 1308 [2020-09-25 06:45:03,123 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 06:45:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-09-25 06:45:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2020-09-25 06:45:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 06:45:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2020-09-25 06:45:03,190 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 148 [2020-09-25 06:45:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:03,192 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2020-09-25 06:45:03,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2020-09-25 06:45:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:45:03,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:03,201 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, 1, 1, 1, 1] [2020-09-25 06:45:03,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:03,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash 931685273, now seen corresponding path program 1 times [2020-09-25 06:45:03,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:03,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462300037] [2020-09-25 06:45:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:45:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:45:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:45:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:45:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:45:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:45:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:45:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:45:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:08,536 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 06:45:08,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462300037] [2020-09-25 06:45:08,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:08,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:08,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025901057] [2020-09-25 06:45:08,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:08,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:08,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:08,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:08,545 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand 5 states. [2020-09-25 06:45:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:10,647 INFO L93 Difference]: Finished difference Result 3300 states and 4205 transitions. [2020-09-25 06:45:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:10,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 06:45:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:10,669 INFO L225 Difference]: With dead ends: 3300 [2020-09-25 06:45:10,669 INFO L226 Difference]: Without dead ends: 1739 [2020-09-25 06:45:10,680 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 06:45:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-09-25 06:45:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1567. [2020-09-25 06:45:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-09-25 06:45:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1909 transitions. [2020-09-25 06:45:10,774 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1909 transitions. Word has length 160 [2020-09-25 06:45:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:10,775 INFO L479 AbstractCegarLoop]: Abstraction has 1567 states and 1909 transitions. [2020-09-25 06:45:10,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1909 transitions. [2020-09-25 06:45:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 06:45:10,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:10,791 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 06:45:10,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:10,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash -904785138, now seen corresponding path program 1 times [2020-09-25 06:45:10,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:10,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728107059] [2020-09-25 06:45:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 06:45:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:45:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 06:45:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:15,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:16,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:45:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:45:16,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:45:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 06:45:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:45:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:45:16,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728107059] [2020-09-25 06:45:16,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:16,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:16,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027255325] [2020-09-25 06:45:16,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:16,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:16,309 INFO L87 Difference]: Start difference. First operand 1567 states and 1909 transitions. Second operand 7 states. [2020-09-25 06:45:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:20,222 INFO L93 Difference]: Finished difference Result 4896 states and 6573 transitions. [2020-09-25 06:45:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:45:20,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-09-25 06:45:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:20,253 INFO L225 Difference]: With dead ends: 4896 [2020-09-25 06:45:20,254 INFO L226 Difference]: Without dead ends: 3351 [2020-09-25 06:45:20,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2020-09-25 06:45:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3078. [2020-09-25 06:45:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3078 states. [2020-09-25 06:45:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 3902 transitions. [2020-09-25 06:45:20,422 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 3902 transitions. Word has length 191 [2020-09-25 06:45:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:20,422 INFO L479 AbstractCegarLoop]: Abstraction has 3078 states and 3902 transitions. [2020-09-25 06:45:20,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 3902 transitions. [2020-09-25 06:45:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 06:45:20,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:20,445 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 06:45:20,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:20,445 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash -68871987, now seen corresponding path program 1 times [2020-09-25 06:45:20,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:20,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151056305] [2020-09-25 06:45:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:45:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:45:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:45:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:45:25,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:45:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:45:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:45:25,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:45:25,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:45:25,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:45:25,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151056305] [2020-09-25 06:45:25,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:25,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:25,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115708211] [2020-09-25 06:45:25,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:25,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:25,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:25,759 INFO L87 Difference]: Start difference. First operand 3078 states and 3902 transitions. Second operand 5 states.