/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:54,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:54,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:54,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:54,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:54,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:54,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:54,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:54,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:54,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:54,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:54,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:54,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:54,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:54,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:54,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:54,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:54,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:54,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:54,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:54,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:54,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:54,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:54,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:54,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:54,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:54,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:54,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:54,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:54,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:54,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:54,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:54,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:54,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:54,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:54,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:54,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:54,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:54,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:54,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:54,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:54,323 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 [2020-09-24 19:24:54,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:54,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:54,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:54,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:54,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:54,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:54,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:54,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:54,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:54,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:54,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:54,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:54,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:54,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:54,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:54,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:54,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:54,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:54,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:54,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:54,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:54,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:54,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:54,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:54,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:54,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:54,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:54,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:54,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:54,355 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:54,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:54,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:54,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:54,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:54,828 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:54,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-24 19:24:54,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d7ccd1/67724288522c4a11ac162c9fdbbae453/FLAG6ce056bec [2020-09-24 19:24:55,488 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:55,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-24 19:24:55,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d7ccd1/67724288522c4a11ac162c9fdbbae453/FLAG6ce056bec [2020-09-24 19:24:55,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d7ccd1/67724288522c4a11ac162c9fdbbae453 [2020-09-24 19:24:55,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:55,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:55,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:55,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:55,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:55,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55, skipping insertion in model container [2020-09-24 19:24:55,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:55,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:56,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:56,301 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:56,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:56,543 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:56,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56 WrapperNode [2020-09-24 19:24:56,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:56,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:56,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:56,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:56,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (1/1) ... [2020-09-24 19:24:56,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:56,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:56,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:56,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:56,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (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 [2020-09-24 19:24:56,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:24:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:24:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:58,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:58,074 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:24:58,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:58 BoogieIcfgContainer [2020-09-24 19:24:58,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:58,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:58,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:58,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:58,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:55" (1/3) ... [2020-09-24 19:24:58,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:58, skipping insertion in model container [2020-09-24 19:24:58,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:56" (2/3) ... [2020-09-24 19:24:58,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:58, skipping insertion in model container [2020-09-24 19:24:58,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:58" (3/3) ... [2020-09-24 19:24:58,093 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-24 19:24:58,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:58,115 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:58,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:24:58,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:58,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:58,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:58,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:58,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:58,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:58,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:58,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:24:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 19:24:58,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:58,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:58,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:58,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-24 19:24:58,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:58,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-24 19:24:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 19:24:59,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-09-24 19:24:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 19:24:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 19:25:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:25:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:00,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-24 19:25:00,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:00,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:25:00,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296925255] [2020-09-24 19:25:00,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:25:00,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:25:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:25:00,232 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:02,308 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-24 19:25:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:02,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-24 19:25:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:02,353 INFO L225 Difference]: With dead ends: 1270 [2020-09-24 19:25:02,353 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 19:25:02,366 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 [2020-09-24 19:25:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 19:25:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-24 19:25:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:25:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-24 19:25:02,488 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-24 19:25:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:02,489 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-24 19:25:02,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-24 19:25:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:25:02,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:02,497 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:02,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:02,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:02,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-24 19:25:02,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:02,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775860771] [2020-09-24 19:25:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 19:25:03,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:25:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:03,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:25:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:25:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:25:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:25:03,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:25:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:03,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775860771] [2020-09-24 19:25:03,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:03,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:25:03,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436699516] [2020-09-24 19:25:03,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:03,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:03,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:03,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:03,862 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-24 19:25:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:07,022 INFO L93 Difference]: Finished difference Result 1936 states and 2500 transitions. [2020-09-24 19:25:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:25:07,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-24 19:25:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:07,034 INFO L225 Difference]: With dead ends: 1936 [2020-09-24 19:25:07,035 INFO L226 Difference]: Without dead ends: 1357 [2020-09-24 19:25:07,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:25:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-09-24 19:25:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1240. [2020-09-24 19:25:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 19:25:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1568 transitions. [2020-09-24 19:25:07,120 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1568 transitions. Word has length 154 [2020-09-24 19:25:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1568 transitions. [2020-09-24 19:25:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1568 transitions. [2020-09-24 19:25:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 19:25:07,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:07,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:07,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:07,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-24 19:25:07,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:07,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123377962] [2020-09-24 19:25:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:07,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:08,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 19:25:08,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:08,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:25:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:08,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:08,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:25:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:08,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123377962] [2020-09-24 19:25:08,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:08,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:08,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844238637] [2020-09-24 19:25:08,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:08,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:08,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:08,611 INFO L87 Difference]: Start difference. First operand 1240 states and 1568 transitions. Second operand 7 states. [2020-09-24 19:25:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:11,629 INFO L93 Difference]: Finished difference Result 2858 states and 3768 transitions. [2020-09-24 19:25:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:11,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-24 19:25:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:11,642 INFO L225 Difference]: With dead ends: 2858 [2020-09-24 19:25:11,642 INFO L226 Difference]: Without dead ends: 1642 [2020-09-24 19:25:11,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-09-24 19:25:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1546. [2020-09-24 19:25:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-24 19:25:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1947 transitions. [2020-09-24 19:25:11,716 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1947 transitions. Word has length 186 [2020-09-24 19:25:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:11,722 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 1947 transitions. [2020-09-24 19:25:11,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1947 transitions. [2020-09-24 19:25:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 19:25:11,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:11,732 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:11,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:11,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1220889089, now seen corresponding path program 1 times [2020-09-24 19:25:11,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:11,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743535843] [2020-09-24 19:25:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:12,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 19:25:12,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 19:25:12,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:25:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:25:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:12,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:25:12,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 64 [2020-09-24 19:25:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:25:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:25:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:25:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:25:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:25:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:25:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:13,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743535843] [2020-09-24 19:25:13,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:13,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:13,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278100456] [2020-09-24 19:25:13,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:13,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:13,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:13,340 INFO L87 Difference]: Start difference. First operand 1546 states and 1947 transitions. Second operand 7 states. [2020-09-24 19:25:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:15,490 INFO L93 Difference]: Finished difference Result 3099 states and 3945 transitions. [2020-09-24 19:25:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:15,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-09-24 19:25:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:15,502 INFO L225 Difference]: With dead ends: 3099 [2020-09-24 19:25:15,502 INFO L226 Difference]: Without dead ends: 1726 [2020-09-24 19:25:15,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-09-24 19:25:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1550. [2020-09-24 19:25:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1550 states. [2020-09-24 19:25:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 1959 transitions. [2020-09-24 19:25:15,552 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 1959 transitions. Word has length 191 [2020-09-24 19:25:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:15,552 INFO L479 AbstractCegarLoop]: Abstraction has 1550 states and 1959 transitions. [2020-09-24 19:25:15,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:15,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 1959 transitions. [2020-09-24 19:25:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 19:25:15,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:15,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:15,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:15,560 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-24 19:25:15,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:15,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671030945] [2020-09-24 19:25:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 19:25:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:16,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 19:25:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:25:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:16,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:25:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:25:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:16,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671030945] [2020-09-24 19:25:16,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:16,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:16,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838942084] [2020-09-24 19:25:16,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:16,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:16,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:16,979 INFO L87 Difference]: Start difference. First operand 1550 states and 1959 transitions. Second operand 7 states. [2020-09-24 19:25:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:19,546 INFO L93 Difference]: Finished difference Result 3620 states and 4711 transitions. [2020-09-24 19:25:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:19,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 19:25:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:19,561 INFO L225 Difference]: With dead ends: 3620 [2020-09-24 19:25:19,561 INFO L226 Difference]: Without dead ends: 2243 [2020-09-24 19:25:19,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-09-24 19:25:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2168. [2020-09-24 19:25:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2168 states. [2020-09-24 19:25:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2758 transitions. [2020-09-24 19:25:19,643 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2758 transitions. Word has length 193 [2020-09-24 19:25:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:19,643 INFO L479 AbstractCegarLoop]: Abstraction has 2168 states and 2758 transitions. [2020-09-24 19:25:19,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2758 transitions. [2020-09-24 19:25:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-24 19:25:19,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:19,658 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:19,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:19,659 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1493837621, now seen corresponding path program 1 times [2020-09-24 19:25:19,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:19,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958173177] [2020-09-24 19:25:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-24 19:25:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-24 19:25:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:25:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:25:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:25:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:25:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:25:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:25:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 19:25:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:25:21,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 19:25:21,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958173177] [2020-09-24 19:25:21,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:21,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269508583] [2020-09-24 19:25:21,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:21,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:21,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:21,285 INFO L87 Difference]: Start difference. First operand 2168 states and 2758 transitions. Second operand 8 states. [2020-09-24 19:25:22,639 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:25:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:25,353 INFO L93 Difference]: Finished difference Result 4878 states and 6536 transitions. [2020-09-24 19:25:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:25:25,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 257 [2020-09-24 19:25:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:25,371 INFO L225 Difference]: With dead ends: 4878 [2020-09-24 19:25:25,371 INFO L226 Difference]: Without dead ends: 3024 [2020-09-24 19:25:25,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:25:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-09-24 19:25:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2812. [2020-09-24 19:25:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-09-24 19:25:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3551 transitions. [2020-09-24 19:25:25,463 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3551 transitions. Word has length 257 [2020-09-24 19:25:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:25,463 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 3551 transitions. [2020-09-24 19:25:25,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3551 transitions. [2020-09-24 19:25:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-24 19:25:25,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:25,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:25,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:25,480 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:25,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1024168242, now seen corresponding path program 1 times [2020-09-24 19:25:25,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:25,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064165596] [2020-09-24 19:25:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-24 19:25:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:25:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:25:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:25:26,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:25:26,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:25:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:25:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:26,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:25:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:25:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:26,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 19:25:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:25:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 142 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 19:25:27,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064165596] [2020-09-24 19:25:27,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:27,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:27,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897635672] [2020-09-24 19:25:27,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:27,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:27,031 INFO L87 Difference]: Start difference. First operand 2812 states and 3551 transitions. Second operand 8 states. [2020-09-24 19:25:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:31,075 INFO L93 Difference]: Finished difference Result 7729 states and 10443 transitions. [2020-09-24 19:25:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:31,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-09-24 19:25:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:31,106 INFO L225 Difference]: With dead ends: 7729 [2020-09-24 19:25:31,106 INFO L226 Difference]: Without dead ends: 4951 [2020-09-24 19:25:31,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2020-09-24 19:25:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4219. [2020-09-24 19:25:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-09-24 19:25:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5228 transitions. [2020-09-24 19:25:31,253 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5228 transitions. Word has length 277 [2020-09-24 19:25:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:31,254 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5228 transitions. [2020-09-24 19:25:31,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5228 transitions. [2020-09-24 19:25:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-24 19:25:31,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:31,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:31,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:31,279 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1393604447, now seen corresponding path program 1 times [2020-09-24 19:25:31,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:31,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244468560] [2020-09-24 19:25:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-24 19:25:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-09-24 19:25:32,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:25:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:32,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:32,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:32,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:25:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:25:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:32,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:25:32,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:25:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:32,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:25:32,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:32,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 148 proven. 26 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:25:33,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244468560] [2020-09-24 19:25:33,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:33,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:33,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616666251] [2020-09-24 19:25:33,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:33,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:33,033 INFO L87 Difference]: Start difference. First operand 4219 states and 5228 transitions. Second operand 8 states. [2020-09-24 19:25:33,643 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-24 19:25:36,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:36,000 INFO L93 Difference]: Finished difference Result 9256 states and 11776 transitions. [2020-09-24 19:25:36,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:36,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2020-09-24 19:25:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:36,021 INFO L225 Difference]: With dead ends: 9256 [2020-09-24 19:25:36,021 INFO L226 Difference]: Without dead ends: 5071 [2020-09-24 19:25:36,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2020-09-24 19:25:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4420. [2020-09-24 19:25:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4420 states. [2020-09-24 19:25:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5490 transitions. [2020-09-24 19:25:36,187 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5490 transitions. Word has length 280 [2020-09-24 19:25:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:36,188 INFO L479 AbstractCegarLoop]: Abstraction has 4420 states and 5490 transitions. [2020-09-24 19:25:36,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5490 transitions. [2020-09-24 19:25:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-24 19:25:36,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:36,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:36,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:36,209 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1853253320, now seen corresponding path program 1 times [2020-09-24 19:25:36,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:36,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040527936] [2020-09-24 19:25:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-24 19:25:37,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-09-24 19:25:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:25:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:25:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:25:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:25:37,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:25:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:37,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:25:37,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 19:25:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 162 proven. 26 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-24 19:25:38,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040527936] [2020-09-24 19:25:38,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:38,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:38,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493176282] [2020-09-24 19:25:38,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:38,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:38,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:38,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:38,038 INFO L87 Difference]: Start difference. First operand 4420 states and 5490 transitions. Second operand 8 states. [2020-09-24 19:25:39,743 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:25:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:41,356 INFO L93 Difference]: Finished difference Result 10297 states and 12938 transitions. [2020-09-24 19:25:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:41,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-09-24 19:25:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:41,380 INFO L225 Difference]: With dead ends: 10297 [2020-09-24 19:25:41,381 INFO L226 Difference]: Without dead ends: 5901 [2020-09-24 19:25:41,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2020-09-24 19:25:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 4988. [2020-09-24 19:25:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4988 states. [2020-09-24 19:25:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 6153 transitions. [2020-09-24 19:25:41,521 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 6153 transitions. Word has length 294 [2020-09-24 19:25:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:41,522 INFO L479 AbstractCegarLoop]: Abstraction has 4988 states and 6153 transitions. [2020-09-24 19:25:41,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 6153 transitions. [2020-09-24 19:25:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-09-24 19:25:41,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:41,546 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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] [2020-09-24 19:25:41,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:41,547 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:41,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1578448033, now seen corresponding path program 1 times [2020-09-24 19:25:41,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:41,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099163242] [2020-09-24 19:25:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-24 19:25:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:25:42,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:25:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:25:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:42,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:42,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:25:42,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:25:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 19:25:42,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:25:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:25:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:43,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:25:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:25:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 19:25:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:43,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:25:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 19:25:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 238 proven. 90 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-09-24 19:25:43,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099163242] [2020-09-24 19:25:43,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:43,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:43,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075917583] [2020-09-24 19:25:43,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:43,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:43,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:43,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:43,248 INFO L87 Difference]: Start difference. First operand 4988 states and 6153 transitions. Second operand 7 states.