/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:46,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:46,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:47,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:47,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:47,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:47,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:47,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:47,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:47,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:47,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:47,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:47,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:47,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:47,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:47,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:47,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:47,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:47,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:47,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:47,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:47,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:47,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:47,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:47,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:47,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:47,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:47,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:47,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:47,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:47,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:47,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:47,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:47,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:47,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:47,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:47,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:47,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:47,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:47,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:47,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:47,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:38:47,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:47,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:47,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:47,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:47,120 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:47,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:47,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:47,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:47,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:47,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:47,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:47,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:47,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:47,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:47,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:47,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:47,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:47,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:47,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:47,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:47,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:47,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:47,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:47,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:47,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:47,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:47,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:47,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:47,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:47,602 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:47,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 05:38:47,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ebbabe28/49d2e54d0f7345afbb73225c174e9e7d/FLAGff4dcdf1f [2020-09-25 05:38:48,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:48,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 05:38:48,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ebbabe28/49d2e54d0f7345afbb73225c174e9e7d/FLAGff4dcdf1f [2020-09-25 05:38:48,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ebbabe28/49d2e54d0f7345afbb73225c174e9e7d [2020-09-25 05:38:48,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:48,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:48,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:48,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:48,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:48,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:48" (1/1) ... [2020-09-25 05:38:48,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:48, skipping insertion in model container [2020-09-25 05:38:48,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:48" (1/1) ... [2020-09-25 05:38:48,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:48,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:49,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:49,180 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:49,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:49,453 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:49,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49 WrapperNode [2020-09-25 05:38:49,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:49,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:49,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:49,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:49,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... [2020-09-25 05:38:49,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:49,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:49,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:49,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:49,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:51,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:51,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:51,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:51 BoogieIcfgContainer [2020-09-25 05:38:51,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:51,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:51,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:51,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:51,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:48" (1/3) ... [2020-09-25 05:38:51,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:51, skipping insertion in model container [2020-09-25 05:38:51,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:49" (2/3) ... [2020-09-25 05:38:51,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:51, skipping insertion in model container [2020-09-25 05:38:51,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:51" (3/3) ... [2020-09-25 05:38:51,120 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 05:38:51,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:51,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:51,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:51,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:51,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:51,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:51,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:51,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:51,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:51,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:51,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:38:51,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:51,248 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] [2020-09-25 05:38:51,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 05:38:51,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:51,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 05:38:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:52,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 05:38:52,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:52,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-09-25 05:38:52,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:52,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 05:38:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:38:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:38:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:38:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:53,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 05:38:53,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:53,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:53,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616193041] [2020-09-25 05:38:53,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:53,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:53,150 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:55,214 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 05:38:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:55,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 05:38:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:55,239 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 05:38:55,240 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 05:38:55,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 05:38:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 05:38:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:38:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:38:55,356 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-25 05:38:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:55,357 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:38:55,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:38:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:38:55,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:55,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:55,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:55,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:55,368 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 05:38:55,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:55,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969241015] [2020-09-25 05:38:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:39:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:39:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:39:00,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:00,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:39:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:39:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:39:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:00,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:00,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:00,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:00,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 05:39:00,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:00,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:00,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:00,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969241015] [2020-09-25 05:39:00,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:00,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:00,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756306486] [2020-09-25 05:39:00,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:00,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:00,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:00,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:00,826 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 05:39:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:02,660 INFO L93 Difference]: Finished difference Result 1375 states and 1726 transitions. [2020-09-25 05:39:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:02,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 05:39:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:02,669 INFO L225 Difference]: With dead ends: 1375 [2020-09-25 05:39:02,669 INFO L226 Difference]: Without dead ends: 814 [2020-09-25 05:39:02,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-09-25 05:39:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 576. [2020-09-25 05:39:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:39:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:39:02,715 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 146 [2020-09-25 05:39:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:02,719 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:39:02,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:39:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:39:02,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:02,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:02,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:02,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-25 05:39:02,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:02,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358531621] [2020-09-25 05:39:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:39:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:39:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:39:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:39:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:07,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:07,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:07,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:39:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:07,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:08,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358531621] [2020-09-25 05:39:08,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:08,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:08,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071362551] [2020-09-25 05:39:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:08,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:08,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:08,014 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 05:39:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:09,778 INFO L93 Difference]: Finished difference Result 1451 states and 1871 transitions. [2020-09-25 05:39:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:09,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 05:39:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:09,787 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 05:39:09,787 INFO L226 Difference]: Without dead ends: 890 [2020-09-25 05:39:09,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-09-25 05:39:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 880. [2020-09-25 05:39:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-25 05:39:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1113 transitions. [2020-09-25 05:39:09,818 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1113 transitions. Word has length 146 [2020-09-25 05:39:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:09,819 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1113 transitions. [2020-09-25 05:39:09,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1113 transitions. [2020-09-25 05:39:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:39:09,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:09,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:09,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:09,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 05:39:09,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:09,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584081971] [2020-09-25 05:39:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 05:39:14,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:39:14,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:39:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:14,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:14,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:14,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:15,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:15,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 05:39:15,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:15,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584081971] [2020-09-25 05:39:15,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:15,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:15,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19889723] [2020-09-25 05:39:15,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:15,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:15,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:15,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:15,120 INFO L87 Difference]: Start difference. First operand 880 states and 1113 transitions. Second operand 6 states. [2020-09-25 05:39:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:17,876 INFO L93 Difference]: Finished difference Result 2740 states and 3647 transitions. [2020-09-25 05:39:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:17,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 05:39:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:17,895 INFO L225 Difference]: With dead ends: 2740 [2020-09-25 05:39:17,895 INFO L226 Difference]: Without dead ends: 1875 [2020-09-25 05:39:17,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-09-25 05:39:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1808. [2020-09-25 05:39:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-25 05:39:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2397 transitions. [2020-09-25 05:39:17,977 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2397 transitions. Word has length 152 [2020-09-25 05:39:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:17,978 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2397 transitions. [2020-09-25 05:39:17,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2397 transitions. [2020-09-25 05:39:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 05:39:17,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:17,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:17,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:17,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash 936089478, now seen corresponding path program 1 times [2020-09-25 05:39:17,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:17,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236741054] [2020-09-25 05:39:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:21,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:39:21,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-09-25 05:39:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:21,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:39:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:39:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:21,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:21,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:39:21,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 05:39:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:39:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:21,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236741054] [2020-09-25 05:39:21,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:21,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:21,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548523673] [2020-09-25 05:39:21,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:21,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:21,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:21,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:21,991 INFO L87 Difference]: Start difference. First operand 1808 states and 2397 transitions. Second operand 5 states. [2020-09-25 05:39:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:23,758 INFO L93 Difference]: Finished difference Result 4991 states and 6858 transitions. [2020-09-25 05:39:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:23,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 05:39:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:23,777 INFO L225 Difference]: With dead ends: 4991 [2020-09-25 05:39:23,777 INFO L226 Difference]: Without dead ends: 3198 [2020-09-25 05:39:23,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2020-09-25 05:39:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2276. [2020-09-25 05:39:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-09-25 05:39:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2958 transitions. [2020-09-25 05:39:23,878 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2958 transitions. Word has length 171 [2020-09-25 05:39:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:23,879 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 2958 transitions. [2020-09-25 05:39:23,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2958 transitions. [2020-09-25 05:39:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 05:39:23,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:23,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:23,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:23,885 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1249398646, now seen corresponding path program 1 times [2020-09-25 05:39:23,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:23,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342310788] [2020-09-25 05:39:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 05:39:28,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:28,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:39:28,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:39:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:39:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:29,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:29,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:29,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:39:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:39:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:29,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:39:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:29,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342310788] [2020-09-25 05:39:29,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:29,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:29,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455721722] [2020-09-25 05:39:29,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:29,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:29,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:29,235 INFO L87 Difference]: Start difference. First operand 2276 states and 2958 transitions. Second operand 5 states. [2020-09-25 05:39:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:31,227 INFO L93 Difference]: Finished difference Result 5327 states and 7012 transitions. [2020-09-25 05:39:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:31,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 05:39:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:31,245 INFO L225 Difference]: With dead ends: 5327 [2020-09-25 05:39:31,246 INFO L226 Difference]: Without dead ends: 3066 [2020-09-25 05:39:31,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-09-25 05:39:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3037. [2020-09-25 05:39:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-09-25 05:39:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 3919 transitions. [2020-09-25 05:39:31,344 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 3919 transitions. Word has length 185 [2020-09-25 05:39:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:31,345 INFO L479 AbstractCegarLoop]: Abstraction has 3037 states and 3919 transitions. [2020-09-25 05:39:31,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 3919 transitions. [2020-09-25 05:39:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 05:39:31,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:31,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:31,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:31,352 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1214059767, now seen corresponding path program 1 times [2020-09-25 05:39:31,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:31,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632664141] [2020-09-25 05:39:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking...