/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:32,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:32,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:32,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:32,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:32,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:32,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:32,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:32,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:32,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:32,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:32,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:32,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:32,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:32,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:32,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:32,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:32,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:32,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:32,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:32,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:32,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:32,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:32,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:32,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:32,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:32,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:32,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:32,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:32,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:32,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:32,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:32,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:32,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:32,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:32,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:32,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:32,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:32,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:32,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:32,549 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 05:37:32,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:32,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:32,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:32,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:32,598 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:32,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:32,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:32,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:32,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:32,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:32,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:32,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:32,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:32,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:32,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:32,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:32,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:32,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:32,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:32,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:32,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:32,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:32,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:32,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:32,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:32,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:32,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:32,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:32,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:32,605 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:33,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:33,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:33,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:33,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:33,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:33,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 05:37:33,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa4d7fa14/191875b018cd4c499b0a998bee0e65a0/FLAGaf0d0aedb [2020-09-25 05:37:33,867 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:33,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 05:37:33,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa4d7fa14/191875b018cd4c499b0a998bee0e65a0/FLAGaf0d0aedb [2020-09-25 05:37:34,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa4d7fa14/191875b018cd4c499b0a998bee0e65a0 [2020-09-25 05:37:34,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:34,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:34,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:34,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:34,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:34,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:34,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34, skipping insertion in model container [2020-09-25 05:37:34,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:34,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:34,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:34,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:34,739 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:34,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:34,989 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:34,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34 WrapperNode [2020-09-25 05:37:34,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:34,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:34,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:34,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:35,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (1/1) ... [2020-09-25 05:37:35,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:35,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:35,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:35,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:35,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (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 05:37:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:35,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:36,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:36,650 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:36,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:36 BoogieIcfgContainer [2020-09-25 05:37:36,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:36,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:36,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:36,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:36,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:34" (1/3) ... [2020-09-25 05:37:36,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:36, skipping insertion in model container [2020-09-25 05:37:36,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:34" (2/3) ... [2020-09-25 05:37:36,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:36, skipping insertion in model container [2020-09-25 05:37:36,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:36" (3/3) ... [2020-09-25 05:37:36,669 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 05:37:36,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:36,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:36,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:36,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:36,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:36,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:36,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:36,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:36,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:36,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:36,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:37:36,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:36,805 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] [2020-09-25 05:37:36,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:36,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 05:37:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:36,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 05:37:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 05:37:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:37:42,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:42,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:37:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:37:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:37:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:42,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:42,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:37:42,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:42,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:37:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:42,364 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 05:37:42,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 05:37:42,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:42,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:42,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052481146] [2020-09-25 05:37:42,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:42,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:42,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:42,398 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:44,770 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:37:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:44,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 05:37:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:44,809 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:37:44,810 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:37:44,823 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 05:37:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:37:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:37:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:37:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:37:44,933 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 05:37:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:44,934 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:37:44,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:37:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 05:37:44,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:44,948 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] [2020-09-25 05:37:44,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:44,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 05:37:44,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:44,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417787864] [2020-09-25 05:37:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:50,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:37:50,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:37:50,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:50,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:37:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:37:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:50,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:50,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:50,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:37:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:50,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:50,366 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 05:37:50,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417787864] [2020-09-25 05:37:50,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:50,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:50,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838171103] [2020-09-25 05:37:50,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:50,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:50,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:50,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:50,371 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:37:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:52,040 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 05:37:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:52,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 05:37:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:52,049 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 05:37:52,050 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 05:37:52,054 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 05:37:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 05:37:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 05:37:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 05:37:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 05:37:52,101 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 135 [2020-09-25 05:37:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:52,102 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 05:37:52,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 05:37:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:37:52,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:52,115 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, 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] [2020-09-25 05:37:52,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:52,116 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash -334312447, now seen corresponding path program 1 times [2020-09-25 05:37:52,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:52,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844641305] [2020-09-25 05:37:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 05:37:57,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:37:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 05:37:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:57,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:37:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:37:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:37:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:37:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:57,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844641305] [2020-09-25 05:37:57,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:57,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:57,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067958913] [2020-09-25 05:37:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:57,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:57,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:57,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:57,467 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 5 states. [2020-09-25 05:37:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:59,769 INFO L93 Difference]: Finished difference Result 2568 states and 3389 transitions. [2020-09-25 05:37:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:59,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 05:37:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:59,788 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 05:37:59,788 INFO L226 Difference]: Without dead ends: 1623 [2020-09-25 05:37:59,794 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 05:37:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-25 05:37:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1575. [2020-09-25 05:37:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-09-25 05:37:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1954 transitions. [2020-09-25 05:37:59,877 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1954 transitions. Word has length 161 [2020-09-25 05:37:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:59,879 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 1954 transitions. [2020-09-25 05:37:59,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1954 transitions. [2020-09-25 05:37:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 05:37:59,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:59,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:59,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:59,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:59,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2022775050, now seen corresponding path program 1 times [2020-09-25 05:37:59,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:59,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385481633] [2020-09-25 05:37:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:38:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:38:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:38:04,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 05:38:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:38:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:05,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:05,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:05,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:05,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:38:05,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:05,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:38:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:38:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:38:05,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385481633] [2020-09-25 05:38:05,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:05,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:05,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837998444] [2020-09-25 05:38:05,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:05,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:05,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:05,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:05,293 INFO L87 Difference]: Start difference. First operand 1575 states and 1954 transitions. Second operand 5 states. [2020-09-25 05:38:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:07,326 INFO L93 Difference]: Finished difference Result 3838 states and 4855 transitions. [2020-09-25 05:38:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:07,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 05:38:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:07,343 INFO L225 Difference]: With dead ends: 3838 [2020-09-25 05:38:07,344 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 05:38:07,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 05:38:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 05:38:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2179. [2020-09-25 05:38:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2020-09-25 05:38:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2749 transitions. [2020-09-25 05:38:07,448 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2749 transitions. Word has length 174 [2020-09-25 05:38:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:07,449 INFO L479 AbstractCegarLoop]: Abstraction has 2179 states and 2749 transitions. [2020-09-25 05:38:07,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2749 transitions. [2020-09-25 05:38:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:38:07,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:07,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:07,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:07,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:07,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1188825606, now seen corresponding path program 1 times [2020-09-25 05:38:07,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:07,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352975122] [2020-09-25 05:38:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:12,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:38:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:38:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:12,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:12,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:12,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:38:12,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:12,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:38:12,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:12,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:38:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:38:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:12,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:38:12,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:12,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352975122] [2020-09-25 05:38:12,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:12,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:12,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263532241] [2020-09-25 05:38:12,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:12,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:12,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:12,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:12,849 INFO L87 Difference]: Start difference. First operand 2179 states and 2749 transitions. Second operand 8 states. [2020-09-25 05:38:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:16,492 INFO L93 Difference]: Finished difference Result 5925 states and 8057 transitions. [2020-09-25 05:38:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:38:16,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 05:38:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:16,521 INFO L225 Difference]: With dead ends: 5925 [2020-09-25 05:38:16,521 INFO L226 Difference]: Without dead ends: 3768 [2020-09-25 05:38:16,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:38:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2020-09-25 05:38:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 2826. [2020-09-25 05:38:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-09-25 05:38:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3562 transitions. [2020-09-25 05:38:16,687 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3562 transitions. Word has length 181 [2020-09-25 05:38:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:16,688 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3562 transitions. [2020-09-25 05:38:16,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3562 transitions. [2020-09-25 05:38:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:38:16,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:16,702 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:16,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:16,702 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash -581823592, now seen corresponding path program 1 times [2020-09-25 05:38:16,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:16,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130942047] [2020-09-25 05:38:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking...