/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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 [2020-09-25 10:12:48,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:48,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:48,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:48,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:48,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:48,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:48,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:48,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:48,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:48,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:48,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:48,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:48,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:48,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:48,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:48,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:48,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:48,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:48,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:48,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:48,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:48,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:48,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:48,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:48,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:48,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:48,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:48,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:48,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:48,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:48,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:48,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:48,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:48,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:48,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:48,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:48,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:48,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:48,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:48,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:48,141 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 10:12:48,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:48,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:48,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:48,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:48,190 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:48,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:48,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:48,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:48,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:48,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:48,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:48,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:48,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:48,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:48,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:48,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:48,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:48,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:48,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:48,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:48,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:48,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:48,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:48,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:48,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:48,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:48,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:48,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:48,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:48,196 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:48,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:48,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:48,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:48,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:48,675 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:48,676 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 10:12:48,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc63273c2/cb3311384a61411cbb3cee74609b72ca/FLAGb4791cee2 [2020-09-25 10:12:49,443 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:49,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 10:12:49,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc63273c2/cb3311384a61411cbb3cee74609b72ca/FLAGb4791cee2 [2020-09-25 10:12:49,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc63273c2/cb3311384a61411cbb3cee74609b72ca [2020-09-25 10:12:49,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:49,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:49,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:49,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:49,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:49,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:49" (1/1) ... [2020-09-25 10:12:49,712 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 10:12:49, skipping insertion in model container [2020-09-25 10:12:49,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:49" (1/1) ... [2020-09-25 10:12:49,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:49,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:50,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:50,349 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:50,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:50,498 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:50,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50 WrapperNode [2020-09-25 10:12:50,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:50,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:50,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:50,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:50,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:50,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:50,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:50,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:50,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (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 10:12:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:50,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:50,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:50,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:52,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:52,186 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:52,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:52 BoogieIcfgContainer [2020-09-25 10:12:52,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:52,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:52,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:52,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:52,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:49" (1/3) ... [2020-09-25 10:12:52,202 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 10:12:52, skipping insertion in model container [2020-09-25 10:12:52,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (2/3) ... [2020-09-25 10:12:52,202 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 10:12:52, skipping insertion in model container [2020-09-25 10:12:52,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:52" (3/3) ... [2020-09-25 10:12:52,205 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 10:12:52,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:52,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:52,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:52,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:52,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:52,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:52,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:52,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:52,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:52,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:52,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:12:52,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:52,329 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] [2020-09-25 10:12:52,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:52,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 10:12:52,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:52,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 10:12:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:12:53,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-09-25 10:12:53,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:12:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:53,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:12:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:53,993 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 10:12:53,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 10:12:53,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:53,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:12:53,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968492648] [2020-09-25 10:12:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:54,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:54,028 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:12:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:57,318 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 10:12:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:57,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 10:12:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:57,352 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 10:12:57,353 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 10:12:57,368 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 [2020-09-25 10:12:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 10:12:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 10:12:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 10:12:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 10:12:57,475 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 10:12:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:57,476 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 10:12:57,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 10:12:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:12:57,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:57,487 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] [2020-09-25 10:12:57,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:57,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 10:12:57,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:57,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208112440] [2020-09-25 10:12:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:13:00,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2900 [2020-09-25 10:13:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:13:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:00,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:00,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:13:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:13:01,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208112440] [2020-09-25 10:13:01,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:01,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:13:01,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717550689] [2020-09-25 10:13:01,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:01,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:01,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:01,036 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 7 states. [2020-09-25 10:13:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:03,424 INFO L93 Difference]: Finished difference Result 2068 states and 2799 transitions. [2020-09-25 10:13:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:13:03,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 10:13:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:03,439 INFO L225 Difference]: With dead ends: 2068 [2020-09-25 10:13:03,440 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 10:13:03,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 10:13:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1195. [2020-09-25 10:13:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-09-25 10:13:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1581 transitions. [2020-09-25 10:13:03,526 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1581 transitions. Word has length 148 [2020-09-25 10:13:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:03,527 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 1581 transitions. [2020-09-25 10:13:03,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1581 transitions. [2020-09-25 10:13:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 10:13:03,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:03,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:03,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:03,540 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 10:13:03,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:03,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550977978] [2020-09-25 10:13:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 10:13:08,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:13:08,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:13:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 10:13:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:13:09,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 10:13:09,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:13:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:09,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550977978] [2020-09-25 10:13:09,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:09,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:09,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038759314] [2020-09-25 10:13:09,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:09,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:09,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:09,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:09,578 INFO L87 Difference]: Start difference. First operand 1195 states and 1581 transitions. Second operand 11 states. [2020-09-25 10:13:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:11,984 INFO L93 Difference]: Finished difference Result 2902 states and 3986 transitions. [2020-09-25 10:13:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:11,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 215 [2020-09-25 10:13:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:11,995 INFO L225 Difference]: With dead ends: 2902 [2020-09-25 10:13:11,996 INFO L226 Difference]: Without dead ends: 1799 [2020-09-25 10:13:12,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-09-25 10:13:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1487. [2020-09-25 10:13:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 10:13:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1902 transitions. [2020-09-25 10:13:12,063 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1902 transitions. Word has length 215 [2020-09-25 10:13:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:12,069 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1902 transitions. [2020-09-25 10:13:12,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:13:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1902 transitions. [2020-09-25 10:13:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 10:13:12,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:12,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:12,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:12,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:12,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1694621717, now seen corresponding path program 1 times [2020-09-25 10:13:12,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:12,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790186825] [2020-09-25 10:13:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 10:13:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:13:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-09-25 10:13:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:17,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:17,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:17,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 10:13:17,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:17,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:13:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:13:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:13:17,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:17,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 10:13:17,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 10:13:18,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790186825] [2020-09-25 10:13:18,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:18,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:18,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681604684] [2020-09-25 10:13:18,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:18,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:18,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:18,244 INFO L87 Difference]: Start difference. First operand 1487 states and 1902 transitions. Second operand 10 states. [2020-09-25 10:13:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:22,039 INFO L93 Difference]: Finished difference Result 3633 states and 4830 transitions. [2020-09-25 10:13:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:22,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-09-25 10:13:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:22,054 INFO L225 Difference]: With dead ends: 3633 [2020-09-25 10:13:22,054 INFO L226 Difference]: Without dead ends: 2288 [2020-09-25 10:13:22,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2020-09-25 10:13:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2097. [2020-09-25 10:13:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2020-09-25 10:13:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2623 transitions. [2020-09-25 10:13:22,147 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2623 transitions. Word has length 244 [2020-09-25 10:13:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:22,147 INFO L479 AbstractCegarLoop]: Abstraction has 2097 states and 2623 transitions. [2020-09-25 10:13:22,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2623 transitions. [2020-09-25 10:13:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 10:13:22,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:22,156 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, 1, 1, 1, 1, 1, 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 10:13:22,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:22,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:22,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1711256871, now seen corresponding path program 1 times [2020-09-25 10:13:22,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:22,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369041031] [2020-09-25 10:13:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 10:13:27,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:13:27,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:13:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-25 10:13:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:27,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:13:27,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:13:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 10:13:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:13:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 10:13:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:28,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 10:13:28,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:28,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369041031] [2020-09-25 10:13:28,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:28,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:13:28,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300550883] [2020-09-25 10:13:28,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:13:28,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:13:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:13:28,492 INFO L87 Difference]: Start difference. First operand 2097 states and 2623 transitions. Second operand 15 states. [2020-09-25 10:13:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:36,619 INFO L93 Difference]: Finished difference Result 7318 states and 10013 transitions. [2020-09-25 10:13:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:13:36,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 249 [2020-09-25 10:13:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:36,652 INFO L225 Difference]: With dead ends: 7318 [2020-09-25 10:13:36,652 INFO L226 Difference]: Without dead ends: 5311 [2020-09-25 10:13:36,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=290, Invalid=640, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:13:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-09-25 10:13:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 4814. [2020-09-25 10:13:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4814 states. [2020-09-25 10:13:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 6239 transitions. [2020-09-25 10:13:36,822 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 6239 transitions. Word has length 249 [2020-09-25 10:13:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:36,823 INFO L479 AbstractCegarLoop]: Abstraction has 4814 states and 6239 transitions. [2020-09-25 10:13:36,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:13:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 6239 transitions. [2020-09-25 10:13:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-25 10:13:36,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:36,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:36,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:36,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash -442587322, now seen corresponding path program 1 times [2020-09-25 10:13:36,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:36,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164705583] [2020-09-25 10:13:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking...