/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:35,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:35,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:35,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:35,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:35,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:35,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:35,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:36,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:36,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:36,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:36,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:36,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:36,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:36,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:36,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:36,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:36,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:36,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:36,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:36,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:36,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:36,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:36,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:36,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:36,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:36,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:36,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:36,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:36,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:36,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:36,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:36,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:36,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:36,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:36,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:36,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:36,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:36,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:36,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:36,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:36,066 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 08:59:36,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:36,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:36,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:36,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:36,105 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:36,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:36,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:36,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:36,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:36,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:36,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:36,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:36,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:36,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:36,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:36,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:36,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:36,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:36,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:36,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:36,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:36,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:36,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:36,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:36,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:36,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:36,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:36,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:36,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:36,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:36,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:36,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:36,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:36,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:36,634 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:36,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 08:59:36,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e41f67b/1c4e5e759c4344559764cb11cc725a0e/FLAGa2396cb74 [2020-09-25 08:59:37,382 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:37,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 08:59:37,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e41f67b/1c4e5e759c4344559764cb11cc725a0e/FLAGa2396cb74 [2020-09-25 08:59:37,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e41f67b/1c4e5e759c4344559764cb11cc725a0e [2020-09-25 08:59:37,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:37,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:37,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:37,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:37,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:37,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:37" (1/1) ... [2020-09-25 08:59:37,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5614dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:37, skipping insertion in model container [2020-09-25 08:59:37,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:37" (1/1) ... [2020-09-25 08:59:37,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:37,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:38,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:38,320 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:38,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:38,434 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:38,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38 WrapperNode [2020-09-25 08:59:38,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:38,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:38,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:38,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:38,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (1/1) ... [2020-09-25 08:59:38,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:38,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:38,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:38,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:38,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (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 08:59:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:40,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:40,068 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:59:40,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:40 BoogieIcfgContainer [2020-09-25 08:59:40,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:40,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:40,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:40,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:40,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:37" (1/3) ... [2020-09-25 08:59:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:40, skipping insertion in model container [2020-09-25 08:59:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:38" (2/3) ... [2020-09-25 08:59:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:40, skipping insertion in model container [2020-09-25 08:59:40,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:40" (3/3) ... [2020-09-25 08:59:40,090 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 08:59:40,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:40,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:40,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:40,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:40,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:40,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:40,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:40,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:40,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:40,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:40,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 08:59:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 08:59:40,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:40,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:40,271 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 08:59:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:40,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133669040] [2020-09-25 08:59:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 08:59:45,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:59:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 08:59:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 08:59:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:59:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:45,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 08:59:45,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:59:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:45,974 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 08:59:45,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133669040] [2020-09-25 08:59:45,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:45,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:45,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747783050] [2020-09-25 08:59:45,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:45,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:46,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:46,012 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 08:59:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:48,325 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 08:59:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:48,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 08:59:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:48,375 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 08:59:48,376 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 08:59:48,387 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 08:59:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 08:59:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 08:59:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 08:59:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 08:59:48,496 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 08:59:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:48,497 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 08:59:48,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 08:59:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 08:59:48,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:48,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:48,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:48,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:48,505 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 08:59:48,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:48,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497137843] [2020-09-25 08:59:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 08:59:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2264 [2020-09-25 08:59:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 08:59:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 08:59:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:59:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 08:59:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:59:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:59:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:59:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:51,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497137843] [2020-09-25 08:59:51,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:51,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:59:51,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974494877] [2020-09-25 08:59:51,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:59:51,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:51,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:59:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:51,155 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 08:59:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:53,172 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 08:59:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:59:53,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 08:59:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:53,179 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 08:59:53,179 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 08:59:53,182 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 08:59:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 08:59:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 08:59:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 08:59:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 08:59:53,229 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 08:59:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:53,229 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 08:59:53,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:59:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 08:59:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 08:59:53,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:53,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:53,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:53,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 08:59:53,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:53,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593447671] [2020-09-25 08:59:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 08:59:58,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 08:59:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 08:59:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 08:59:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:58,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:58,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 08:59:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:59:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:59:58,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:59:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 08:59:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:58,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 08:59:58,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:59:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:59:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:58,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593447671] [2020-09-25 08:59:58,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:58,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:59:58,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703956054] [2020-09-25 08:59:58,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:58,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:58,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:58,563 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 09:00:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:00,974 INFO L93 Difference]: Finished difference Result 2597 states and 3323 transitions. [2020-09-25 09:00:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:00,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 09:00:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:00,993 INFO L225 Difference]: With dead ends: 2597 [2020-09-25 09:00:00,993 INFO L226 Difference]: Without dead ends: 1671 [2020-09-25 09:00:00,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 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 09:00:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2020-09-25 09:00:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1393. [2020-09-25 09:00:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-09-25 09:00:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1671 transitions. [2020-09-25 09:00:01,084 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1671 transitions. Word has length 160 [2020-09-25 09:00:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:01,084 INFO L479 AbstractCegarLoop]: Abstraction has 1393 states and 1671 transitions. [2020-09-25 09:00:01,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1671 transitions. [2020-09-25 09:00:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 09:00:01,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:01,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:01,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:01,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 09:00:01,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:01,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835515058] [2020-09-25 09:00:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:06,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:00:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:00:06,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:06,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 09:00:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:00:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:06,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:06,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:06,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:00:06,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:06,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:06,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:06,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:00:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:06,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:00:06,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835515058] [2020-09-25 09:00:06,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:06,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:06,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958702605] [2020-09-25 09:00:06,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:06,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:06,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:06,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:06,861 INFO L87 Difference]: Start difference. First operand 1393 states and 1671 transitions. Second operand 9 states. [2020-09-25 09:00:09,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:09,276 INFO L93 Difference]: Finished difference Result 2857 states and 3503 transitions. [2020-09-25 09:00:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:09,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-09-25 09:00:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:09,288 INFO L225 Difference]: With dead ends: 2857 [2020-09-25 09:00:09,288 INFO L226 Difference]: Without dead ends: 1398 [2020-09-25 09:00:09,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-09-25 09:00:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1388. [2020-09-25 09:00:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-09-25 09:00:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1662 transitions. [2020-09-25 09:00:09,361 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1662 transitions. Word has length 174 [2020-09-25 09:00:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:09,363 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1662 transitions. [2020-09-25 09:00:09,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:00:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1662 transitions. [2020-09-25 09:00:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 09:00:09,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:09,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:09,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:09,371 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1524876455, now seen corresponding path program 1 times [2020-09-25 09:00:09,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:09,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138763720] [2020-09-25 09:00:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 09:00:14,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:00:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:00:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:00:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:00:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:00:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:14,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:14,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:14,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:00:14,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 09:00:14,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:14,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:00:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:00:14,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138763720] [2020-09-25 09:00:14,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:14,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:14,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732935989] [2020-09-25 09:00:14,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:14,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:14,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:14,848 INFO L87 Difference]: Start difference. First operand 1388 states and 1662 transitions. Second operand 8 states. [2020-09-25 09:00:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:16,904 INFO L93 Difference]: Finished difference Result 3168 states and 3882 transitions. [2020-09-25 09:00:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:16,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 09:00:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:16,916 INFO L225 Difference]: With dead ends: 3168 [2020-09-25 09:00:16,916 INFO L226 Difference]: Without dead ends: 1804 [2020-09-25 09:00:16,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:00:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-09-25 09:00:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1574. [2020-09-25 09:00:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-09-25 09:00:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 1819 transitions. [2020-09-25 09:00:16,976 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 1819 transitions. Word has length 180 [2020-09-25 09:00:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:16,976 INFO L479 AbstractCegarLoop]: Abstraction has 1574 states and 1819 transitions. [2020-09-25 09:00:16,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 1819 transitions. [2020-09-25 09:00:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:00:16,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:16,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:16,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:16,983 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:16,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1034432759, now seen corresponding path program 1 times [2020-09-25 09:00:16,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:16,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895869891] [2020-09-25 09:00:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:00:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:00:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:00:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:00:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:22,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:00:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:00:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 09:00:22,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 09:00:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 09:00:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:00:22,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:00:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:22,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895869891] [2020-09-25 09:00:22,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:22,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:22,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276222674] [2020-09-25 09:00:22,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:22,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:22,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:22,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:22,625 INFO L87 Difference]: Start difference. First operand 1574 states and 1819 transitions. Second operand 8 states. [2020-09-25 09:00:23,981 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65