/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:40,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:40,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:40,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:40,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:40,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:40,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:40,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:40,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:40,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:40,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:40,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:40,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:40,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:40,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:40,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:40,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:40,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:40,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:40,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:40,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:40,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:40,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:40,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:40,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:40,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:40,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:40,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:40,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:40,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:40,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:40,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:40,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:40,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:40,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:40,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:40,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:40,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:40,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:40,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:40,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:40,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:46:40,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:40,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:40,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:40,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:40,732 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:40,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:40,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:40,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:40,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:40,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:40,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:40,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:40,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:40,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:40,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:40,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:40,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:40,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:40,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:40,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:40,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:40,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:40,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:40,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:40,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:41,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:41,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:41,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:41,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:41,253 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:41,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 06:46:41,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a859d463/aab01c0e8f8644d28bb1505cc6db1921/FLAG040850ad3 [2020-09-25 06:46:42,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:42,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 06:46:42,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a859d463/aab01c0e8f8644d28bb1505cc6db1921/FLAG040850ad3 [2020-09-25 06:46:42,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a859d463/aab01c0e8f8644d28bb1505cc6db1921 [2020-09-25 06:46:42,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:42,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:42,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:42,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:42,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:42,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:42" (1/1) ... [2020-09-25 06:46:42,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:42, skipping insertion in model container [2020-09-25 06:46:42,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:42" (1/1) ... [2020-09-25 06:46:42,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:42,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:42,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:42,869 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:43,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:43,206 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:43,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43 WrapperNode [2020-09-25 06:46:43,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:43,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:43,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:43,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:43,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... [2020-09-25 06:46:43,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:43,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:43,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:43,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:43,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:44,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:44,969 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:44 BoogieIcfgContainer [2020-09-25 06:46:44,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:44,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:44,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:44,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:44,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:42" (1/3) ... [2020-09-25 06:46:44,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:44, skipping insertion in model container [2020-09-25 06:46:44,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:43" (2/3) ... [2020-09-25 06:46:44,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:44, skipping insertion in model container [2020-09-25 06:46:44,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:44" (3/3) ... [2020-09-25 06:46:44,990 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 06:46:45,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:45,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:45,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:45,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:45,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:45,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:45,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:45,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:45,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:45,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:45,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:46:45,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:45,121 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] [2020-09-25 06:46:45,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:45,130 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 06:46:45,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:45,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:46:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:46,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:46:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:46:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-25 06:46:46,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:46,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:46:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:46,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:46,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:46:46,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:46,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:46:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:46,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:46:46,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:46,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:46:46,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887769240] [2020-09-25 06:46:46,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:46,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:46,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:46,528 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:46:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:49,576 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 06:46:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:46:49,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 06:46:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:49,624 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 06:46:49,624 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 06:46:49,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 06:46:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 06:46:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 06:46:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 06:46:49,745 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 43 [2020-09-25 06:46:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:49,746 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 06:46:49,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 06:46:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 06:46:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:49,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:49,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:49,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash -819138438, now seen corresponding path program 1 times [2020-09-25 06:46:49,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:49,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163387650] [2020-09-25 06:46:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:46:52,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-09-25 06:46:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:46:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:46:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:52,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:46:52,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:46:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 06:46:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:53,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:46:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:53,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163387650] [2020-09-25 06:46:53,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:53,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:53,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052010617] [2020-09-25 06:46:53,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:53,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:53,181 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 06:46:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:55,536 INFO L93 Difference]: Finished difference Result 1802 states and 2314 transitions. [2020-09-25 06:46:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:55,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-09-25 06:46:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:55,546 INFO L225 Difference]: With dead ends: 1802 [2020-09-25 06:46:55,546 INFO L226 Difference]: Without dead ends: 1090 [2020-09-25 06:46:55,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-09-25 06:46:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1042. [2020-09-25 06:46:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 06:46:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1242 transitions. [2020-09-25 06:46:55,631 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1242 transitions. Word has length 126 [2020-09-25 06:46:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:55,632 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1242 transitions. [2020-09-25 06:46:55,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1242 transitions. [2020-09-25 06:46:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 06:46:55,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:55,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:55,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:55,637 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 06:46:55,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:55,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178469453] [2020-09-25 06:46:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:55,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 06:46:58,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2333 [2020-09-25 06:46:58,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:46:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:46:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:46:58,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:46:58,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 06:46:58,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:46:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:58,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178469453] [2020-09-25 06:46:58,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:58,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:58,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985570738] [2020-09-25 06:46:58,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:58,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:58,265 INFO L87 Difference]: Start difference. First operand 1042 states and 1242 transitions. Second operand 5 states. [2020-09-25 06:46:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:59,807 INFO L93 Difference]: Finished difference Result 2383 states and 2948 transitions. [2020-09-25 06:46:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:59,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 06:46:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:59,822 INFO L225 Difference]: With dead ends: 2383 [2020-09-25 06:46:59,824 INFO L226 Difference]: Without dead ends: 1004 [2020-09-25 06:46:59,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-09-25 06:46:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1000. [2020-09-25 06:46:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-09-25 06:46:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1178 transitions. [2020-09-25 06:46:59,890 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1178 transitions. Word has length 132 [2020-09-25 06:46:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:59,893 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1178 transitions. [2020-09-25 06:46:59,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1178 transitions. [2020-09-25 06:46:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 06:46:59,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:59,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:59,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:59,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:59,906 INFO L82 PathProgramCache]: Analyzing trace with hash -682799120, now seen corresponding path program 1 times [2020-09-25 06:46:59,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:59,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550643048] [2020-09-25 06:46:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:47:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-09-25 06:47:01,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:01,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:47:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:01,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:47:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:01,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:47:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 06:47:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:01,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:47:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:01,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550643048] [2020-09-25 06:47:01,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:01,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:01,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919912898] [2020-09-25 06:47:01,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:01,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:01,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:01,787 INFO L87 Difference]: Start difference. First operand 1000 states and 1178 transitions. Second operand 7 states. [2020-09-25 06:47:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:03,722 INFO L93 Difference]: Finished difference Result 2471 states and 3258 transitions. [2020-09-25 06:47:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:03,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 06:47:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:03,742 INFO L225 Difference]: With dead ends: 2471 [2020-09-25 06:47:03,742 INFO L226 Difference]: Without dead ends: 1636 [2020-09-25 06:47:03,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-09-25 06:47:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1476. [2020-09-25 06:47:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-25 06:47:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1773 transitions. [2020-09-25 06:47:03,819 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1773 transitions. Word has length 148 [2020-09-25 06:47:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:03,820 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1773 transitions. [2020-09-25 06:47:03,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1773 transitions. [2020-09-25 06:47:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 06:47:03,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:03,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:03,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:03,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:03,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1819236263, now seen corresponding path program 1 times [2020-09-25 06:47:03,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:03,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449480468] [2020-09-25 06:47:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 06:47:08,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:47:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:47:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:08,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:08,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:08,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:08,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:09,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:47:09,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:09,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:47:09,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 06:47:09,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:47:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:09,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449480468] [2020-09-25 06:47:09,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:09,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:09,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289444717] [2020-09-25 06:47:09,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:09,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:09,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:09,568 INFO L87 Difference]: Start difference. First operand 1476 states and 1773 transitions. Second operand 8 states. [2020-09-25 06:47:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:12,805 INFO L93 Difference]: Finished difference Result 4106 states and 5264 transitions. [2020-09-25 06:47:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:12,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-09-25 06:47:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:12,820 INFO L225 Difference]: With dead ends: 4106 [2020-09-25 06:47:12,820 INFO L226 Difference]: Without dead ends: 2795 [2020-09-25 06:47:12,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-09-25 06:47:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2597. [2020-09-25 06:47:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2597 states. [2020-09-25 06:47:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3241 transitions. [2020-09-25 06:47:12,905 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3241 transitions. Word has length 230 [2020-09-25 06:47:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:12,905 INFO L479 AbstractCegarLoop]: Abstraction has 2597 states and 3241 transitions. [2020-09-25 06:47:12,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3241 transitions. [2020-09-25 06:47:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 06:47:12,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:12,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:12,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:12,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 06:47:12,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:12,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136386880] [2020-09-25 06:47:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 06:47:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 06:47:13,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 06:47:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:47:13,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 06:47:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:47:13,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 06:47:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 06:47:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:47:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 06:47:13,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136386880] [2020-09-25 06:47:13,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:13,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:13,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585318179] [2020-09-25 06:47:13,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:13,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:13,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:13,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:13,857 INFO L87 Difference]: Start difference. First operand 2597 states and 3241 transitions. Second operand 5 states. [2020-09-25 06:47:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:15,684 INFO L93 Difference]: Finished difference Result 5783 states and 7403 transitions. [2020-09-25 06:47:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:15,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-09-25 06:47:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:15,707 INFO L225 Difference]: With dead ends: 5783 [2020-09-25 06:47:15,707 INFO L226 Difference]: Without dead ends: 3351 [2020-09-25 06:47:15,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2020-09-25 06:47:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 2741. [2020-09-25 06:47:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2020-09-25 06:47:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3375 transitions. [2020-09-25 06:47:15,799 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3375 transitions. Word has length 247 [2020-09-25 06:47:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:15,799 INFO L479 AbstractCegarLoop]: Abstraction has 2741 states and 3375 transitions. [2020-09-25 06:47:15,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3375 transitions. [2020-09-25 06:47:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-09-25 06:47:15,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:15,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:15,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:15,812 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 400337494, now seen corresponding path program 1 times [2020-09-25 06:47:15,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:15,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692856931] [2020-09-25 06:47:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:20,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-09-25 06:47:20,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:47:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:20,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 06:47:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-09-25 06:47:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 06:47:21,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 06:47:21,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 06:47:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 06:47:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:21,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:47:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 06:47:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:47:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-25 06:47:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 06:47:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 06:47:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:47:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 274 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 06:47:22,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692856931] [2020-09-25 06:47:22,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:22,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:22,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260218219] [2020-09-25 06:47:22,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:22,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:22,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:22,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:22,015 INFO L87 Difference]: Start difference. First operand 2741 states and 3375 transitions. Second operand 7 states. [2020-09-25 06:47:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:24,880 INFO L93 Difference]: Finished difference Result 6745 states and 8398 transitions. [2020-09-25 06:47:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:24,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-09-25 06:47:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:24,899 INFO L225 Difference]: With dead ends: 6745 [2020-09-25 06:47:24,899 INFO L226 Difference]: Without dead ends: 4169 [2020-09-25 06:47:24,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2020-09-25 06:47:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 3997. [2020-09-25 06:47:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-09-25 06:47:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 4700 transitions. [2020-09-25 06:47:25,001 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 4700 transitions. Word has length 379 [2020-09-25 06:47:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:25,001 INFO L479 AbstractCegarLoop]: Abstraction has 3997 states and 4700 transitions. [2020-09-25 06:47:25,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 4700 transitions. [2020-09-25 06:47:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-09-25 06:47:25,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:25,018 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:25,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:47:25,019 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2123236661, now seen corresponding path program 1 times [2020-09-25 06:47:25,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:25,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109638533] [2020-09-25 06:47:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking...