/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:10,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:10,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:10,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:10,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:10,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:10,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:10,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:10,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:10,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:10,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:10,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:10,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:10,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:10,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:10,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:10,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:10,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:10,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:10,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:10,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:10,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:10,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:10,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:10,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:10,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:10,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:10,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:10,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:10,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:10,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:10,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:10,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:10,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:10,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:10,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:10,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:10,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:10,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:10,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:10,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:10,971 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 12:22:10,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:10,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:10,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:10,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:10,999 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:10,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:10,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:10,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:11,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:11,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:11,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:11,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:11,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:11,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:11,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:11,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:11,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:11,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:11,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:11,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:11,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:11,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:11,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:11,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:11,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:11,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:11,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:11,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:11,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:11,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:22:11,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:11,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:11,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:11,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:11,472 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:11,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 12:22:11,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7595ffc52/69bd975b5a5943c5ad90177f41c0ef9f/FLAGcb8071f8a [2020-09-25 12:22:12,179 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:12,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 12:22:12,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7595ffc52/69bd975b5a5943c5ad90177f41c0ef9f/FLAGcb8071f8a [2020-09-25 12:22:12,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7595ffc52/69bd975b5a5943c5ad90177f41c0ef9f [2020-09-25 12:22:12,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:12,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:12,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:12,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:12,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:12,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:12" (1/1) ... [2020-09-25 12:22:12,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:12, skipping insertion in model container [2020-09-25 12:22:12,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:12" (1/1) ... [2020-09-25 12:22:12,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:12,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:12,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:12,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:13,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:13,271 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:13,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13 WrapperNode [2020-09-25 12:22:13,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:13,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:13,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:13,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:13,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (1/1) ... [2020-09-25 12:22:13,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:13,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:13,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:13,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:13,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (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 12:22:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:14,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:14,802 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:14,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:14 BoogieIcfgContainer [2020-09-25 12:22:14,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:14,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:14,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:14,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:14,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:12" (1/3) ... [2020-09-25 12:22:14,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:14, skipping insertion in model container [2020-09-25 12:22:14,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:13" (2/3) ... [2020-09-25 12:22:14,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:14, skipping insertion in model container [2020-09-25 12:22:14,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:14" (3/3) ... [2020-09-25 12:22:14,820 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 12:22:14,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:14,842 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:14,864 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:14,898 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:14,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:14,899 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:14,899 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:14,899 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:14,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:14,900 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:14,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 12:22:14,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:14,951 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] [2020-09-25 12:22:14,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 12:22:14,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:14,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:22:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 12:22:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:22:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:20,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:22:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 12:22:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:22:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:20,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:22:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:20,566 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 12:22:20,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:22:20,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:20,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:22:20,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480752922] [2020-09-25 12:22:20,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:22:20,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:20,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:22:20,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:22:20,596 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:22:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:22,635 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 12:22:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:22,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 12:22:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:22,666 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 12:22:22,666 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 12:22:22,676 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 12:22:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 12:22:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 12:22:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:22:22,779 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 12:22:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:22,780 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:22:22,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:22:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:22:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:22:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:22,788 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:22,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:22,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2029057097, now seen corresponding path program 1 times [2020-09-25 12:22:22,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:22,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915534558] [2020-09-25 12:22:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:22:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:22:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:28,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:28,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:28,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:28,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:28,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:28,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:22:28,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:28,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:28,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:28,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915534558] [2020-09-25 12:22:28,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:28,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:28,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656955803] [2020-09-25 12:22:28,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:28,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:28,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:28,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:28,124 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 12:22:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:30,079 INFO L93 Difference]: Finished difference Result 1503 states and 1875 transitions. [2020-09-25 12:22:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:30,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 12:22:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:30,091 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 12:22:30,092 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 12:22:30,095 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 12:22:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 12:22:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 12:22:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 12:22:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 12:22:30,167 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 133 [2020-09-25 12:22:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:30,170 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 12:22:30,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 12:22:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:22:30,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:30,181 INFO L422 BasicCegarLoop]: trace histogram [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 12:22:30,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:30,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:30,183 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-25 12:22:30,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:30,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473371468] [2020-09-25 12:22:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:22:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:22:35,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 12:22:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 12:22:35,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:22:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:22:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:22:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:35,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473371468] [2020-09-25 12:22:35,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:35,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:35,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468974630] [2020-09-25 12:22:35,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:35,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:35,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:35,509 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 12:22:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:37,558 INFO L93 Difference]: Finished difference Result 2052 states and 2599 transitions. [2020-09-25 12:22:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:37,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 12:22:37,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:37,564 INFO L225 Difference]: With dead ends: 2052 [2020-09-25 12:22:37,565 INFO L226 Difference]: Without dead ends: 855 [2020-09-25 12:22:37,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 12:22:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-09-25 12:22:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 843. [2020-09-25 12:22:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-09-25 12:22:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1028 transitions. [2020-09-25 12:22:37,595 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1028 transitions. Word has length 142 [2020-09-25 12:22:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:37,595 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1028 transitions. [2020-09-25 12:22:37,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1028 transitions. [2020-09-25 12:22:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:22:37,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:37,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:37,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:37,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:37,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2044898584, now seen corresponding path program 1 times [2020-09-25 12:22:37,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:37,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619831188] [2020-09-25 12:22:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:41,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:22:42,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:22:42,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:22:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:22:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:42,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:22:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:22:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:22:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:22:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:22:42,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:22:42,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619831188] [2020-09-25 12:22:42,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:42,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:22:42,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839772171] [2020-09-25 12:22:42,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:42,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:42,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:42,977 INFO L87 Difference]: Start difference. First operand 843 states and 1028 transitions. Second operand 7 states. [2020-09-25 12:22:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:44,787 INFO L93 Difference]: Finished difference Result 1979 states and 2488 transitions. [2020-09-25 12:22:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:22:44,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-25 12:22:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:44,795 INFO L225 Difference]: With dead ends: 1979 [2020-09-25 12:22:44,795 INFO L226 Difference]: Without dead ends: 1160 [2020-09-25 12:22:44,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:22:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-09-25 12:22:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1137. [2020-09-25 12:22:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2020-09-25 12:22:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1414 transitions. [2020-09-25 12:22:44,837 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1414 transitions. Word has length 166 [2020-09-25 12:22:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:44,837 INFO L479 AbstractCegarLoop]: Abstraction has 1137 states and 1414 transitions. [2020-09-25 12:22:44,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1414 transitions. [2020-09-25 12:22:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 12:22:44,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:44,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:44,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:44,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -949554311, now seen corresponding path program 1 times [2020-09-25 12:22:44,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:44,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009986297] [2020-09-25 12:22:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 12:22:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:22:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:22:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:22:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:22:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:22:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:50,613 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-09-25 12:22:50,787 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-09-25 12:22:50,950 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-09-25 12:22:51,120 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2020-09-25 12:22:51,280 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-09-25 12:22:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:51,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:51,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:22:51,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:51,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:22:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:22:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 12:22:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:51,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:51,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:51,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:22:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:22:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 12:22:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:51,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:22:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:22:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:52,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009986297] [2020-09-25 12:22:52,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:52,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:22:52,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95740739] [2020-09-25 12:22:52,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:22:52,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:52,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:22:52,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:22:52,159 INFO L87 Difference]: Start difference. First operand 1137 states and 1414 transitions. Second operand 22 states. [2020-09-25 12:22:56,186 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-25 12:22:56,542 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-25 12:22:57,496 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-09-25 12:22:58,104 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-09-25 12:22:58,534 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-09-25 12:22:59,104 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-09-25 12:22:59,467 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-09-25 12:23:00,455 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88