/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:34:07,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:34:07,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:34:07,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:34:07,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:34:07,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:34:07,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:34:07,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:34:07,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:34:07,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:34:07,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:34:07,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:34:07,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:34:07,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:34:07,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:34:07,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:34:07,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:34:07,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:34:07,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:34:07,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:34:07,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:34:07,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:34:07,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:34:07,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:34:07,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:34:07,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:34:07,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:34:07,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:34:07,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:34:07,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:34:07,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:34:07,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:34:07,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:34:07,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:34:07,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:34:07,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:34:07,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:34:07,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:34:07,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:34:07,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:34:07,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:34:07,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:34:07,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:34:07,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:34:07,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:34:07,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:34:07,241 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:34:07,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:34:07,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:34:07,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:34:07,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:34:07,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:34:07,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:34:07,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:34:07,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:34:07,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:34:07,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:34:07,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:34:07,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:34:07,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:34:07,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:34:07,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:34:07,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:34:07,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:34:07,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:34:07,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:34:07,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:34:07,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:34:07,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:34:07,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:34:07,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:34:07,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:34:07,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:34:07,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:34:07,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:34:07,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:34:07,765 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:34:07,766 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 06:34:07,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16fb3543/bbfd9a6a2d1e4277ac942796b48a4cdd/FLAGa37ee8f31 [2020-09-25 06:34:08,405 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:34:08,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 06:34:08,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16fb3543/bbfd9a6a2d1e4277ac942796b48a4cdd/FLAGa37ee8f31 [2020-09-25 06:34:08,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16fb3543/bbfd9a6a2d1e4277ac942796b48a4cdd [2020-09-25 06:34:08,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:34:08,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:34:08,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:08,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:34:08,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:34:08,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:08" (1/1) ... [2020-09-25 06:34:08,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:08, skipping insertion in model container [2020-09-25 06:34:08,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:08" (1/1) ... [2020-09-25 06:34:08,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:34:08,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:34:09,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:09,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:34:09,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:09,098 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:34:09,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09 WrapperNode [2020-09-25 06:34:09,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:09,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:34:09,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:34:09,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:34:09,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... [2020-09-25 06:34:09,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:34:09,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:34:09,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:34:09,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:34:09,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:34:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:34:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:34:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 06:34:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 06:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:34:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:34:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:34:09,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:34:09,577 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:34:09,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:09 BoogieIcfgContainer [2020-09-25 06:34:09,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:34:09,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:34:09,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:34:09,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:34:09,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:34:08" (1/3) ... [2020-09-25 06:34:09,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68030087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:09, skipping insertion in model container [2020-09-25 06:34:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:09" (2/3) ... [2020-09-25 06:34:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68030087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:09, skipping insertion in model container [2020-09-25 06:34:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:09" (3/3) ... [2020-09-25 06:34:09,595 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 06:34:09,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:34:09,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:34:09,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:34:09,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:34:09,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:34:09,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:34:09,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:34:09,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:34:09,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:34:09,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:34:09,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:34:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 06:34:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:34:09,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:09,764 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] [2020-09-25 06:34:09,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 06:34:09,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:09,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358869005] [2020-09-25 06:34:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:10,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:34:10,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 06:34:10,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:10,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:34:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:34:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:34:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:10,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:34:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:10,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:10,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 06:34:10,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:34:10,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358869005] [2020-09-25 06:34:10,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:10,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:34:10,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717157823] [2020-09-25 06:34:10,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:34:10,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:10,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:34:10,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:34:10,357 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 06:34:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:10,538 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 06:34:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:34:10,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 06:34:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:10,556 INFO L225 Difference]: With dead ends: 59 [2020-09-25 06:34:10,556 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 06:34:10,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:34:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 06:34:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 06:34:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 06:34:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 06:34:10,625 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 06:34:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:10,625 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 06:34:10,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:34:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 06:34:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:34:10,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:10,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:34:10,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:34:10,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 06:34:10,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:10,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771576052] [2020-09-25 06:34:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:34:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 06:34:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:34:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:34:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:34:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:34:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:10,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:11,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:11,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:34:11,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:11,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:34:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:11,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:11,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:11,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:34:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:11,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-09-25 06:34:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:34:11,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771576052] [2020-09-25 06:34:11,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:11,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:34:11,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124389439] [2020-09-25 06:34:11,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:34:11,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:11,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:34:11,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:34:11,216 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 06:34:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:11,471 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:34:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:34:11,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 06:34:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:11,475 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:34:11,475 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:34:11,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:34:11,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:34:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:34:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:34:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 06:34:11,487 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 06:34:11,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:11,487 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 06:34:11,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:34:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 06:34:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:34:11,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:11,490 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:34:11,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:34:11,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 06:34:11,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:11,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655223712] [2020-09-25 06:34:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:11,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:34:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:34:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-09-25 06:34:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:12,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:34:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:34:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:12,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:12,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:12,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:34:12,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:12,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:12,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:12,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:34:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:34:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:12,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:34:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:34:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:12,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:12,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:34:12,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:12,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:12,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:34:12,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:12,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:34:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:34:12,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655223712] [2020-09-25 06:34:12,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:12,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:34:12,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421264724] [2020-09-25 06:34:12,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:34:12,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:12,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:34:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:34:12,644 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-09-25 06:34:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:12,750 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-09-25 06:34:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:34:12,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 06:34:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:12,754 INFO L225 Difference]: With dead ends: 75 [2020-09-25 06:34:12,754 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:34:12,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:34:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:34:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 06:34:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 06:34:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 06:34:12,778 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 43 [2020-09-25 06:34:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:12,779 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 06:34:12,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:34:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 06:34:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:34:12,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:12,786 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-09-25 06:34:12,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:34:12,787 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 06:34:12,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:12,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963790819] [2020-09-25 06:34:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:34:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 06:34:13,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 06:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:34:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:13,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:34:13,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:34:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 06:34:13,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:34:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:34:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 06:34:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:34:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:13,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:34:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:34:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:13,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:13,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:34:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 06:34:13,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963790819] [2020-09-25 06:34:13,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:13,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:34:13,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182369609] [2020-09-25 06:34:13,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:34:13,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:13,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:34:13,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:34:13,832 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-09-25 06:34:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:14,261 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-09-25 06:34:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 06:34:14,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 06:34:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:14,264 INFO L225 Difference]: With dead ends: 69 [2020-09-25 06:34:14,265 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:34:14,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:34:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:34:14,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-25 06:34:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 06:34:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-09-25 06:34:14,280 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 53 [2020-09-25 06:34:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:14,281 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-09-25 06:34:14,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:34:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-09-25 06:34:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:34:14,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:14,284 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:14,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:34:14,284 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:14,285 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 2 times [2020-09-25 06:34:14,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:14,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024790259] [2020-09-25 06:34:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:19,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:34:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:34:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:34:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:19,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:34:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:34:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:19,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:19,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:34:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:34:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-09-25 06:34:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:34:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:34:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:34:21,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:34:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:34:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:34:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:34:21,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:34:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:34:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 06:34:21,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024790259] [2020-09-25 06:34:21,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:21,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:34:21,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575038340] [2020-09-25 06:34:21,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:34:21,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:21,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:34:21,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:34:21,276 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 9 states. [2020-09-25 06:34:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:21,455 INFO L93 Difference]: Finished difference Result 134 states and 225 transitions. [2020-09-25 06:34:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:34:21,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-25 06:34:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:21,459 INFO L225 Difference]: With dead ends: 134 [2020-09-25 06:34:21,459 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 06:34:21,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:34:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 06:34:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-25 06:34:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 06:34:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 136 transitions. [2020-09-25 06:34:21,478 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 136 transitions. Word has length 63 [2020-09-25 06:34:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:21,479 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 136 transitions. [2020-09-25 06:34:21,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:34:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 136 transitions. [2020-09-25 06:34:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:34:21,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:21,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:21,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:34:21,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:21,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 3 times [2020-09-25 06:34:21,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:21,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943956708] [2020-09-25 06:34:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:34:21,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 06:34:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:34:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:34:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:34:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:21,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:34:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 06:34:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:22,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:34:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:34:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:34:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 06:34:22,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:34:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:34:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:34:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:34:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:22,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:22,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:34:22,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:22,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:22,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:34:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:34:22,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:22,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:34:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 06:34:22,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943956708] [2020-09-25 06:34:22,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:22,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:34:22,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133174513] [2020-09-25 06:34:22,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:34:22,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:34:22,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:34:22,632 INFO L87 Difference]: Start difference. First operand 90 states and 136 transitions. Second operand 12 states. [2020-09-25 06:34:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:23,015 INFO L93 Difference]: Finished difference Result 124 states and 192 transitions. [2020-09-25 06:34:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:34:23,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 06:34:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:23,022 INFO L225 Difference]: With dead ends: 124 [2020-09-25 06:34:23,023 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 06:34:23,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:34:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 06:34:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2020-09-25 06:34:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 06:34:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2020-09-25 06:34:23,057 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 63 [2020-09-25 06:34:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:23,058 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2020-09-25 06:34:23,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:34:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2020-09-25 06:34:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:34:23,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:23,060 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2020-09-25 06:34:23,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:34:23,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash 449882030, now seen corresponding path program 4 times [2020-09-25 06:34:23,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:23,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245332723] [2020-09-25 06:34:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:27,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 06:34:27,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:34:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4314 [2020-09-25 06:34:27,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:27,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:34:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 06:34:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:34:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:27,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:27,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:27,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:27,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:27,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:34:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-25 06:34:28,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:34:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:34:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:34:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:34:28,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:34:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:34:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:34:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:34:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:34:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:34:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:34:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:34:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:34:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 06:34:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:34:28,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:34:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:28,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:28,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:28,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:28,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 06:34:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245332723] [2020-09-25 06:34:28,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:28,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 06:34:28,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600129213] [2020-09-25 06:34:28,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:34:28,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:34:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:34:28,274 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand 4 states. [2020-09-25 06:34:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:28,330 INFO L93 Difference]: Finished difference Result 156 states and 257 transitions. [2020-09-25 06:34:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:34:28,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 06:34:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:28,333 INFO L225 Difference]: With dead ends: 156 [2020-09-25 06:34:28,334 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 06:34:28,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:34:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 06:34:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-25 06:34:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 06:34:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2020-09-25 06:34:28,348 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 73 [2020-09-25 06:34:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:28,349 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2020-09-25 06:34:28,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:34:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2020-09-25 06:34:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 06:34:28,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:28,352 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:34:28,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:34:28,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 5 times [2020-09-25 06:34:28,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:28,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366279105] [2020-09-25 06:34:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:34:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 06:34:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:34:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:32,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:32,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:32,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:32,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3015 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:34:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:34:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:34:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:34:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:34:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:35,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:34:35,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:35,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:35,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:34:35,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:36,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:34:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:36,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:36,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:36,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:36,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:36,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:34:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:34:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:36,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:34:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:34:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:36,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-09-25 06:34:36,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366279105] [2020-09-25 06:34:36,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:36,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:34:36,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349581018] [2020-09-25 06:34:36,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:34:36,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:36,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:34:36,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:34:36,122 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 9 states. [2020-09-25 06:34:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:36,307 INFO L93 Difference]: Finished difference Result 104 states and 153 transitions. [2020-09-25 06:34:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:34:36,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 06:34:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:36,311 INFO L225 Difference]: With dead ends: 104 [2020-09-25 06:34:36,311 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 06:34:36,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:34:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 06:34:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 06:34:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 06:34:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 146 transitions. [2020-09-25 06:34:36,334 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 146 transitions. Word has length 92 [2020-09-25 06:34:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:36,334 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 146 transitions. [2020-09-25 06:34:36,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:34:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 146 transitions. [2020-09-25 06:34:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 06:34:36,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:36,336 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:36,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:34:36,336 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1838029976, now seen corresponding path program 6 times [2020-09-25 06:34:36,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:36,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581055821] [2020-09-25 06:34:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:41,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 06:34:41,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:34:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:34:41,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:41,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:34:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:34:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:34:41,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:41,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:41,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:41,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:41,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 06:34:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:46,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 06:34:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:34:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:34:46,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:46,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:46,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:34:46,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:34:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 06:34:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:34:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:34:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:34:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 06:34:51,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:34:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:51,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:34:51,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:51,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:51,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:34:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:51,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:34:51,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:34:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:34:51,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 06:34:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:51,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 06:34:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 117 proven. 25 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-09-25 06:34:51,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581055821] [2020-09-25 06:34:51,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:51,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:34:51,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743167217] [2020-09-25 06:34:51,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:34:51,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:34:51,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:34:51,710 INFO L87 Difference]: Start difference. First operand 98 states and 146 transitions. Second operand 7 states. [2020-09-25 06:34:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:51,841 INFO L93 Difference]: Finished difference Result 158 states and 265 transitions. [2020-09-25 06:34:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:34:51,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-09-25 06:34:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:51,845 INFO L225 Difference]: With dead ends: 158 [2020-09-25 06:34:51,845 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:34:51,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:34:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:34:51,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:34:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:34:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:34:51,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-09-25 06:34:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:51,849 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:34:51,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:34:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:34:51,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:34:51,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:34:51,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:34:52,328 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2020-09-25 06:34:52,389 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 06:34:52,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:34:52,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:34:52,390 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 06:34:52,390 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 06:34:52,390 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:34:52,390 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 06:34:52,390 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2020-09-25 06:34:52,390 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 06:34:52,391 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 06:34:52,391 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2020-09-25 06:34:52,392 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (= ackermann_~m |ackermann_#in~m|)) (.cse1 (= ackermann_~n |ackermann_#in~n|))) (or (and .cse0 .cse1 (= |ackermann_#in~m| 0)) (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|) .cse0 .cse1) (and (<= 2 ackermann_~m) .cse0 .cse1))) [2020-09-25 06:34:52,392 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 06:34:52,392 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 06:34:52,392 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 06:34:52,393 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 06:34:52,394 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 06:34:52,394 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 06:34:52,394 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 06:34:52,394 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 06:34:52,394 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 06:34:52,395 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 06:34:52,396 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 06:34:52,396 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 06:34:52,396 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 06:34:52,396 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 06:34:52,396 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 06:34:52,396 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 06:34:52,397 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 06:34:52,397 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 06:34:52,397 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 06:34:52,397 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 06:34:52,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:34:52 BoogieIcfgContainer [2020-09-25 06:34:52,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:34:52,411 INFO L168 Benchmark]: Toolchain (without parser) took 43622.24 ms. Allocated memory was 140.0 MB in the beginning and 449.3 MB in the end (delta: 309.3 MB). Free memory was 102.4 MB in the beginning and 403.1 MB in the end (delta: -300.7 MB). Peak memory consumption was 326.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:34:52,413 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:34:52,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.33 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:34:52,414 INFO L168 Benchmark]: Boogie Preprocessor took 32.05 ms. Allocated memory is still 140.0 MB. Free memory was 92.2 MB in the beginning and 90.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 06:34:52,419 INFO L168 Benchmark]: RCFGBuilder took 452.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 167.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:34:52,421 INFO L168 Benchmark]: TraceAbstraction took 42822.75 ms. Allocated memory was 202.4 MB in the beginning and 449.3 MB in the end (delta: 246.9 MB). Free memory was 167.1 MB in the beginning and 403.1 MB in the end (delta: -236.0 MB). Peak memory consumption was 328.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:34:52,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.33 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.05 ms. Allocated memory is still 140.0 MB. Free memory was 92.2 MB in the beginning and 90.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 167.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42822.75 ms. Allocated memory was 202.4 MB in the beginning and 449.3 MB in the end (delta: 246.9 MB). Free memory was 167.1 MB in the beginning and 403.1 MB in the end (delta: -236.0 MB). Peak memory consumption was 328.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 42.1s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 319 SDtfs, 309 SDslu, 1242 SDs, 0 SdLazy, 941 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 117 PreInvPairs, 169 NumberOfFragments, 65 HoareAnnotationTreeSize, 117 FomulaSimplifications, 841 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 591 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 39.4s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 547 ConstructedInterpolants, 0 QuantifiedInterpolants, 68819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 621/714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...