/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:05,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:05,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:06,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:06,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:06,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:06,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:06,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:06,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:06,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:06,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:06,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:06,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:06,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:06,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:06,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:06,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:06,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:06,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:06,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:06,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:06,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:06,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:06,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:06,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:06,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:06,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:06,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:06,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:06,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:06,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:06,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:06,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:06,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:06,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:06,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:06,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:06,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:06,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:06,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:06,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:06,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:30:06,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:06,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:06,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:06,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:06,150 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:06,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:06,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:06,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:06,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:06,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:06,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:06,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:06,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:06,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:06,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:06,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:06,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:06,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:06,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:06,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:06,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:06,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:06,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:06,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:06,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:06,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:06,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:06,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:06,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:06,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:06,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:06,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:06,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:06,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:06,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:06,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-24 19:30:06,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cc204bc/adb5ee9fa75d45db87331be944a3e41c/FLAGef30c6523 [2020-09-24 19:30:07,400 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:07,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-24 19:30:07,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cc204bc/adb5ee9fa75d45db87331be944a3e41c/FLAGef30c6523 [2020-09-24 19:30:07,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cc204bc/adb5ee9fa75d45db87331be944a3e41c [2020-09-24 19:30:07,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:07,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:07,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:07,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:07,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:07,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:07" (1/1) ... [2020-09-24 19:30:07,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f62795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:07, skipping insertion in model container [2020-09-24 19:30:07,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:07" (1/1) ... [2020-09-24 19:30:07,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:07,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:08,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:08,255 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:08,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:08,498 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:08,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08 WrapperNode [2020-09-24 19:30:08,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:08,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:08,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:08,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:08,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... [2020-09-24 19:30:08,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:08,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:08,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:08,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:08,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:10,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:10,197 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:10,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:10 BoogieIcfgContainer [2020-09-24 19:30:10,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:10,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:10,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:10,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:10,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:07" (1/3) ... [2020-09-24 19:30:10,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eaeeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:10, skipping insertion in model container [2020-09-24 19:30:10,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:08" (2/3) ... [2020-09-24 19:30:10,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eaeeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:10, skipping insertion in model container [2020-09-24 19:30:10,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:10" (3/3) ... [2020-09-24 19:30:10,220 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-24 19:30:10,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:10,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:10,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:10,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:10,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:10,320 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:10,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:10,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:10,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:10,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:10,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:30:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 19:30:10,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:10,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:10,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-24 19:30:10,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:10,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378727257] [2020-09-24 19:30:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:30:11,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:30:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:30:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:30:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:11,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378727257] [2020-09-24 19:30:11,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:11,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:30:11,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593965054] [2020-09-24 19:30:11,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:11,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:11,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:11,886 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 19:30:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:15,232 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-24 19:30:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:30:15,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-24 19:30:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:15,263 INFO L225 Difference]: With dead ends: 1358 [2020-09-24 19:30:15,263 INFO L226 Difference]: Without dead ends: 812 [2020-09-24 19:30:15,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-24 19:30:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-24 19:30:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-24 19:30:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-24 19:30:15,402 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-24 19:30:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:15,404 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-24 19:30:15,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-24 19:30:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 19:30:15,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:15,430 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, 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] [2020-09-24 19:30:15,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:15,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-24 19:30:15,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:15,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377783452] [2020-09-24 19:30:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 19:30:16,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-24 19:30:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:30:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:16,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 19:30:16,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:16,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377783452] [2020-09-24 19:30:16,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:16,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:30:16,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50722514] [2020-09-24 19:30:16,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:30:16,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:30:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:16,819 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 6 states. [2020-09-24 19:30:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:19,359 INFO L93 Difference]: Finished difference Result 1935 states and 2628 transitions. [2020-09-24 19:30:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:30:19,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-24 19:30:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:19,373 INFO L225 Difference]: With dead ends: 1935 [2020-09-24 19:30:19,373 INFO L226 Difference]: Without dead ends: 1365 [2020-09-24 19:30:19,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-09-24 19:30:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1343. [2020-09-24 19:30:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2020-09-24 19:30:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1809 transitions. [2020-09-24 19:30:19,459 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1809 transitions. Word has length 148 [2020-09-24 19:30:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:19,460 INFO L479 AbstractCegarLoop]: Abstraction has 1343 states and 1809 transitions. [2020-09-24 19:30:19,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:30:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1809 transitions. [2020-09-24 19:30:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-24 19:30:19,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:19,472 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:19,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:19,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash -411924492, now seen corresponding path program 1 times [2020-09-24 19:30:19,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:19,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113215806] [2020-09-24 19:30:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 19:30:20,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:30:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-24 19:30:20,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:20,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:30:20,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 19:30:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:21,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113215806] [2020-09-24 19:30:21,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:21,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:21,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243869127] [2020-09-24 19:30:21,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:21,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:21,203 INFO L87 Difference]: Start difference. First operand 1343 states and 1809 transitions. Second operand 7 states. [2020-09-24 19:30:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:24,013 INFO L93 Difference]: Finished difference Result 3108 states and 4375 transitions. [2020-09-24 19:30:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:24,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-09-24 19:30:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:24,041 INFO L225 Difference]: With dead ends: 3108 [2020-09-24 19:30:24,041 INFO L226 Difference]: Without dead ends: 1933 [2020-09-24 19:30:24,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-09-24 19:30:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1815. [2020-09-24 19:30:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2020-09-24 19:30:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2363 transitions. [2020-09-24 19:30:24,209 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2363 transitions. Word has length 234 [2020-09-24 19:30:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:24,211 INFO L479 AbstractCegarLoop]: Abstraction has 1815 states and 2363 transitions. [2020-09-24 19:30:24,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2363 transitions. [2020-09-24 19:30:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 19:30:24,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:24,219 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, 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] [2020-09-24 19:30:24,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:24,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash -612082400, now seen corresponding path program 1 times [2020-09-24 19:30:24,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:24,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467893960] [2020-09-24 19:30:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:25,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:25,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 19:30:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-24 19:30:25,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 19:30:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:30:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:25,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:25,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:25,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 19:30:25,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 19:30:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:30:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 19:30:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 19:30:25,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:26,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467893960] [2020-09-24 19:30:26,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:26,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:26,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904836010] [2020-09-24 19:30:26,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:26,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:26,057 INFO L87 Difference]: Start difference. First operand 1815 states and 2363 transitions. Second operand 8 states. [2020-09-24 19:30:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:29,382 INFO L93 Difference]: Finished difference Result 4090 states and 5786 transitions. [2020-09-24 19:30:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:30:29,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-09-24 19:30:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:29,401 INFO L225 Difference]: With dead ends: 4090 [2020-09-24 19:30:29,401 INFO L226 Difference]: Without dead ends: 2591 [2020-09-24 19:30:29,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:30:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-09-24 19:30:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2295. [2020-09-24 19:30:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-09-24 19:30:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2982 transitions. [2020-09-24 19:30:29,505 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2982 transitions. Word has length 240 [2020-09-24 19:30:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:29,506 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2982 transitions. [2020-09-24 19:30:29,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2982 transitions. [2020-09-24 19:30:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 19:30:29,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:29,513 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:29,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:29,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1526364266, now seen corresponding path program 1 times [2020-09-24 19:30:29,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:29,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327999599] [2020-09-24 19:30:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:30,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 19:30:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:30:30,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:30:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:30:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:30,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:30,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:30,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 19:30:30,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:30:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:30:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:31,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 19:30:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:31,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327999599] [2020-09-24 19:30:31,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:31,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:31,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382363531] [2020-09-24 19:30:31,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:31,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:31,275 INFO L87 Difference]: Start difference. First operand 2295 states and 2982 transitions. Second operand 8 states. [2020-09-24 19:30:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:35,286 INFO L93 Difference]: Finished difference Result 7664 states and 10939 transitions. [2020-09-24 19:30:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:30:35,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-24 19:30:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:35,314 INFO L225 Difference]: With dead ends: 7664 [2020-09-24 19:30:35,314 INFO L226 Difference]: Without dead ends: 4633 [2020-09-24 19:30:35,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:30:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2020-09-24 19:30:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4591. [2020-09-24 19:30:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-09-24 19:30:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 5755 transitions. [2020-09-24 19:30:35,464 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 5755 transitions. Word has length 244 [2020-09-24 19:30:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:35,465 INFO L479 AbstractCegarLoop]: Abstraction has 4591 states and 5755 transitions. [2020-09-24 19:30:35,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 5755 transitions. [2020-09-24 19:30:35,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-24 19:30:35,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:35,477 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:35,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:35,478 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:35,478 INFO L82 PathProgramCache]: Analyzing trace with hash -59874532, now seen corresponding path program 1 times [2020-09-24 19:30:35,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:35,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372184388] [2020-09-24 19:30:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-24 19:30:36,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:36,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-09-24 19:30:36,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-24 19:30:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 19:30:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:30:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:30:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:37,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 19:30:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:37,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372184388] [2020-09-24 19:30:37,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:37,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:37,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902561243] [2020-09-24 19:30:37,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:37,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:37,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:37,160 INFO L87 Difference]: Start difference. First operand 4591 states and 5755 transitions. Second operand 8 states. [2020-09-24 19:30:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:41,305 INFO L93 Difference]: Finished difference Result 10514 states and 13452 transitions. [2020-09-24 19:30:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:30:41,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-09-24 19:30:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:41,338 INFO L225 Difference]: With dead ends: 10514 [2020-09-24 19:30:41,339 INFO L226 Difference]: Without dead ends: 6393 [2020-09-24 19:30:41,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:30:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2020-09-24 19:30:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 6169. [2020-09-24 19:30:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6169 states. [2020-09-24 19:30:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6169 states to 6169 states and 7286 transitions. [2020-09-24 19:30:41,550 INFO L78 Accepts]: Start accepts. Automaton has 6169 states and 7286 transitions. Word has length 260 [2020-09-24 19:30:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:41,551 INFO L479 AbstractCegarLoop]: Abstraction has 6169 states and 7286 transitions. [2020-09-24 19:30:41,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6169 states and 7286 transitions. [2020-09-24 19:30:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-24 19:30:41,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:41,568 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:41,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:30:41,568 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash 97035287, now seen corresponding path program 1 times [2020-09-24 19:30:41,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:41,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809912661] [2020-09-24 19:30:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-09-24 19:30:42,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:30:42,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-24 19:30:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 19:30:42,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:42,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:42,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:42,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:30:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:30:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 19:30:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 19:30:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 19:30:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:43,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809912661] [2020-09-24 19:30:43,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:43,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:43,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489777405] [2020-09-24 19:30:43,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:43,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:43,357 INFO L87 Difference]: Start difference. First operand 6169 states and 7286 transitions. Second operand 7 states. [2020-09-24 19:30:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:46,253 INFO L93 Difference]: Finished difference Result 13793 states and 16517 transitions. [2020-09-24 19:30:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:46,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-09-24 19:30:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:46,293 INFO L225 Difference]: With dead ends: 13793 [2020-09-24 19:30:46,293 INFO L226 Difference]: Without dead ends: 8094 [2020-09-24 19:30:46,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8094 states. [2020-09-24 19:30:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8094 to 7723. [2020-09-24 19:30:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7723 states. [2020-09-24 19:30:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 9014 transitions. [2020-09-24 19:30:46,508 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 9014 transitions. Word has length 290 [2020-09-24 19:30:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:46,509 INFO L479 AbstractCegarLoop]: Abstraction has 7723 states and 9014 transitions. [2020-09-24 19:30:46,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 9014 transitions. [2020-09-24 19:30:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-24 19:30:46,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:46,533 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:46,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:30:46,533 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:46,534 INFO L82 PathProgramCache]: Analyzing trace with hash -358359890, now seen corresponding path program 1 times [2020-09-24 19:30:46,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:46,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851732709] [2020-09-24 19:30:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:47,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-24 19:30:47,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:30:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:47,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:47,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:47,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:47,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:47,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:30:47,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:30:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:30:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-24 19:30:48,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:30:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:48,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851732709] [2020-09-24 19:30:48,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:48,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:48,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738550899] [2020-09-24 19:30:48,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:48,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:48,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:48,693 INFO L87 Difference]: Start difference. First operand 7723 states and 9014 transitions. Second operand 8 states. [2020-09-24 19:30:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:51,829 INFO L93 Difference]: Finished difference Result 13580 states and 15825 transitions. [2020-09-24 19:30:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:51,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-09-24 19:30:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:51,872 INFO L225 Difference]: With dead ends: 13580 [2020-09-24 19:30:51,872 INFO L226 Difference]: Without dead ends: 8055 [2020-09-24 19:30:51,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:30:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2020-09-24 19:30:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 7723. [2020-09-24 19:30:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7723 states. [2020-09-24 19:30:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 8989 transitions. [2020-09-24 19:30:52,075 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 8989 transitions. Word has length 303 [2020-09-24 19:30:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:52,076 INFO L479 AbstractCegarLoop]: Abstraction has 7723 states and 8989 transitions. [2020-09-24 19:30:52,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 8989 transitions. [2020-09-24 19:30:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-24 19:30:52,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:52,102 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:52,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:30:52,102 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash -746280131, now seen corresponding path program 1 times [2020-09-24 19:30:52,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:52,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25500565] [2020-09-24 19:30:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:52,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-24 19:30:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:30:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 19:30:53,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:53,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:53,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:30:53,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 19:30:53,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 19:30:53,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 19:30:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 19:30:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:30:53,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:30:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-24 19:30:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 106 proven. 114 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:30:53,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25500565] [2020-09-24 19:30:53,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:53,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:53,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705301377] [2020-09-24 19:30:53,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:53,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:53,826 INFO L87 Difference]: Start difference. First operand 7723 states and 8989 transitions. Second operand 7 states. [2020-09-24 19:30:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:55,809 INFO L93 Difference]: Finished difference Result 14626 states and 17163 transitions. [2020-09-24 19:30:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:55,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-09-24 19:30:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:55,831 INFO L225 Difference]: With dead ends: 14626 [2020-09-24 19:30:55,831 INFO L226 Difference]: Without dead ends: 7222 [2020-09-24 19:30:55,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2020-09-24 19:30:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 6606. [2020-09-24 19:30:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6606 states. [2020-09-24 19:30:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 7565 transitions. [2020-09-24 19:30:56,124 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 7565 transitions. Word has length 328 [2020-09-24 19:30:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:56,125 INFO L479 AbstractCegarLoop]: Abstraction has 6606 states and 7565 transitions. [2020-09-24 19:30:56,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 7565 transitions. [2020-09-24 19:30:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-24 19:30:56,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:56,146 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:56,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:30:56,147 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:56,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1440514719, now seen corresponding path program 1 times [2020-09-24 19:30:56,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:56,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836934903] [2020-09-24 19:30:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-09-24 19:30:57,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:30:57,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-24 19:30:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 19:30:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:30:57,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:57,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:30:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 19:30:57,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:30:57,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:30:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-24 19:30:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:57,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 19:30:57,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0