/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:41,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:41,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:41,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:41,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:41,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:41,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:41,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:41,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:41,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:41,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:41,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:41,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:41,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:41,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:41,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:41,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:41,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:41,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:41,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:41,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:41,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:41,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:41,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:41,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:41,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:41,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:41,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:41,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:41,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:41,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:41,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:41,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:41,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:41,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:41,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:41,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:41,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:41,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:41,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:41,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:41,094 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 04:29:41,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:41,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:41,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:41,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:41,152 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:41,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:41,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:41,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:41,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:41,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:41,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:41,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:41,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:41,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:41,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:41,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:41,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:41,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:41,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:41,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:41,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:41,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:41,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:41,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:41,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:41,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:41,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:41,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:41,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:41,159 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:29:41,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:41,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:41,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:41,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:41,632 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:41,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 04:29:41,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196c19c78/31b91f58cae349028e7a6546604f1c45/FLAG1597309c6 [2020-09-25 04:29:42,373 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:42,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 04:29:42,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196c19c78/31b91f58cae349028e7a6546604f1c45/FLAG1597309c6 [2020-09-25 04:29:42,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196c19c78/31b91f58cae349028e7a6546604f1c45 [2020-09-25 04:29:42,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:42,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:42,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:42,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:42,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:42,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:42" (1/1) ... [2020-09-25 04:29:42,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:42, skipping insertion in model container [2020-09-25 04:29:42,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:42" (1/1) ... [2020-09-25 04:29:42,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:42,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:43,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:43,454 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:43,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:43,578 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:43,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43 WrapperNode [2020-09-25 04:29:43,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:43,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:43,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:43,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:43,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... [2020-09-25 04:29:43,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:43,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:43,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:43,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:43,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:45,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:45,384 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:45,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:45 BoogieIcfgContainer [2020-09-25 04:29:45,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:45,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:45,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:45,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:45,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:42" (1/3) ... [2020-09-25 04:29:45,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315cad77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:45, skipping insertion in model container [2020-09-25 04:29:45,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:43" (2/3) ... [2020-09-25 04:29:45,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315cad77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:45, skipping insertion in model container [2020-09-25 04:29:45,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:45" (3/3) ... [2020-09-25 04:29:45,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 04:29:45,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:45,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:45,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:45,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:45,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:45,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:45,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:45,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:45,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:45,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:45,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:29:45,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:45,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:45,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 04:29:45,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:45,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958419691] [2020-09-25 04:29:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:29:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-09-25 04:29:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:46,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:29:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:46,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:46,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:29:46,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:46,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:46,715 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 04:29:46,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958419691] [2020-09-25 04:29:46,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:46,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:46,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730767440] [2020-09-25 04:29:46,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:46,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:46,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:46,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:46,753 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:29:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:48,942 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:29:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:48,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 04:29:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:48,972 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:29:48,972 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:29:48,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:29:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:29:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:29:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:29:49,092 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 67 [2020-09-25 04:29:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:49,093 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:29:49,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:49,093 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:29:49,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:29:49,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:49,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:49,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:49,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:49,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 04:29:49,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:49,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877263162] [2020-09-25 04:29:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:29:54,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 04:29:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:29:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:29:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:54,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:29:54,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 04:29:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:29:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:54,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877263162] [2020-09-25 04:29:54,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:54,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:29:54,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951352679] [2020-09-25 04:29:54,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:29:54,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:54,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:29:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:54,491 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 04:29:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:56,957 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 04:29:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:29:56,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 04:29:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:56,967 INFO L225 Difference]: With dead ends: 850 [2020-09-25 04:29:56,968 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 04:29:56,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 04:29:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 04:29:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 04:29:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 04:29:57,024 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 146 [2020-09-25 04:29:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:57,025 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 04:29:57,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:29:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 04:29:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:29:57,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:57,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:57,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:57,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:57,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1814743407, now seen corresponding path program 1 times [2020-09-25 04:29:57,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:57,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105964661] [2020-09-25 04:29:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:30:02,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:30:02,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:30:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 04:30:02,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:30:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:30:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:30:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 04:30:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:02,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105964661] [2020-09-25 04:30:02,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:02,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:30:02,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085984243] [2020-09-25 04:30:02,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:02,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:02,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:02,749 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 04:30:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:04,997 INFO L93 Difference]: Finished difference Result 1852 states and 2501 transitions. [2020-09-25 04:30:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:04,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 04:30:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:05,006 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 04:30:05,007 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 04:30:05,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 04:30:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1005. [2020-09-25 04:30:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-25 04:30:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1273 transitions. [2020-09-25 04:30:05,056 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1273 transitions. Word has length 203 [2020-09-25 04:30:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:05,057 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1273 transitions. [2020-09-25 04:30:05,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1273 transitions. [2020-09-25 04:30:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 04:30:05,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:05,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:05,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:05,066 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1197577330, now seen corresponding path program 1 times [2020-09-25 04:30:05,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:05,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956508814] [2020-09-25 04:30:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 04:30:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-25 04:30:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:30:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:10,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:10,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:10,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 04:30:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 04:30:10,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 04:30:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 04:30:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:10,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956508814] [2020-09-25 04:30:10,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:10,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:10,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737694016] [2020-09-25 04:30:10,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:10,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:10,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:10,910 INFO L87 Difference]: Start difference. First operand 1005 states and 1273 transitions. Second operand 7 states. [2020-09-25 04:30:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:13,908 INFO L93 Difference]: Finished difference Result 2594 states and 3535 transitions. [2020-09-25 04:30:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:13,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-25 04:30:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:13,926 INFO L225 Difference]: With dead ends: 2594 [2020-09-25 04:30:13,926 INFO L226 Difference]: Without dead ends: 1754 [2020-09-25 04:30:13,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2020-09-25 04:30:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1522. [2020-09-25 04:30:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 04:30:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1948 transitions. [2020-09-25 04:30:14,041 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1948 transitions. Word has length 275 [2020-09-25 04:30:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:14,042 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1948 transitions. [2020-09-25 04:30:14,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1948 transitions. [2020-09-25 04:30:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 04:30:14,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:14,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:14,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:14,059 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:14,059 INFO L82 PathProgramCache]: Analyzing trace with hash 467338268, now seen corresponding path program 1 times [2020-09-25 04:30:14,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:14,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771391167] [2020-09-25 04:30:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 04:30:19,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:30:19,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 04:30:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:30:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:19,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:19,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:19,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:30:19,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 04:30:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:30:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 04:30:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 04:30:19,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:20,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771391167] [2020-09-25 04:30:20,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:20,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:30:20,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507493252] [2020-09-25 04:30:20,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:30:20,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:20,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:30:20,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:30:20,126 INFO L87 Difference]: Start difference. First operand 1522 states and 1948 transitions. Second operand 8 states. [2020-09-25 04:30:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:23,268 INFO L93 Difference]: Finished difference Result 3508 states and 4722 transitions. [2020-09-25 04:30:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:30:23,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 04:30:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:23,282 INFO L225 Difference]: With dead ends: 3508 [2020-09-25 04:30:23,282 INFO L226 Difference]: Without dead ends: 2151 [2020-09-25 04:30:23,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:30:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-09-25 04:30:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1649. [2020-09-25 04:30:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 04:30:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 1986 transitions. [2020-09-25 04:30:23,354 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 1986 transitions. Word has length 279 [2020-09-25 04:30:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:23,355 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 1986 transitions. [2020-09-25 04:30:23,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:30:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 1986 transitions. [2020-09-25 04:30:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-09-25 04:30:23,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:23,365 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:23,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:23,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:23,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1512672608, now seen corresponding path program 1 times [2020-09-25 04:30:23,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:23,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752285495] [2020-09-25 04:30:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-09-25 04:30:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:30:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 04:30:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 04:30:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 04:30:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:30:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 04:30:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:30:28,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 04:30:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 04:30:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1