/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=0.5 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:01,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:01,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:01,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:01,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:01,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:01,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:01,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:01,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:01,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:01,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:01,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:01,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:01,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:01,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:01,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:01,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:01,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:01,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:01,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:01,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:01,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:01,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:01,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:01,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:01,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:01,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:01,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:01,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:01,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:01,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:01,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:01,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:01,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:01,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:01,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:01,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:01,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:01,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:01,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:01,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:01,229 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 14:43:01,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:01,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:01,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:01,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:01,277 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:01,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:01,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:01,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:01,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:01,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:01,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:01,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:01,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:01,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:01,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:01,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:01,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:01,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:01,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:01,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:01,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:01,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:01,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:01,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:01,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:01,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:01,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:01,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:01,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:01,283 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:43:01,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:01,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:01,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:01,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:01,838 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:01,839 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 14:43:01,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a141f066/8b48d5e630d54f44bac6d40b2e38a019/FLAG6a38d5b7a [2020-09-25 14:43:02,627 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:02,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 14:43:02,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a141f066/8b48d5e630d54f44bac6d40b2e38a019/FLAG6a38d5b7a [2020-09-25 14:43:02,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a141f066/8b48d5e630d54f44bac6d40b2e38a019 [2020-09-25 14:43:02,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:02,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:02,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:02,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:02,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:02,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:02" (1/1) ... [2020-09-25 14:43:02,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:02, skipping insertion in model container [2020-09-25 14:43:02,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:02" (1/1) ... [2020-09-25 14:43:02,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:02,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:03,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:03,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:03,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:03,729 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:03,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03 WrapperNode [2020-09-25 14:43:03,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:03,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:03,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:03,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:03,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:03,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:03,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:03,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:03,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (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 14:43:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:05,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:05,443 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:05,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:05 BoogieIcfgContainer [2020-09-25 14:43:05,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:05,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:05,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:05,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:05,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:02" (1/3) ... [2020-09-25 14:43:05,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:05, skipping insertion in model container [2020-09-25 14:43:05,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03" (2/3) ... [2020-09-25 14:43:05,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:05, skipping insertion in model container [2020-09-25 14:43:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:05" (3/3) ... [2020-09-25 14:43:05,463 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 14:43:05,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:05,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:05,516 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:05,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:05,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:05,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:05,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:05,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:05,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:05,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:05,556 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:43:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 14:43:05,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:05,603 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] [2020-09-25 14:43:05,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:05,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 14:43:05,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:05,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213234276] [2020-09-25 14:43:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 14:43:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-09-25 14:43:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:43:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:43:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:07,583 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 14:43:07,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213234276] [2020-09-25 14:43:07,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:07,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:43:07,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888235249] [2020-09-25 14:43:07,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:07,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:07,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:07,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:07,623 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:43:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:10,405 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 14:43:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:43:10,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-09-25 14:43:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:10,434 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:43:10,434 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 14:43:10,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 14:43:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 14:43:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:43:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 14:43:10,567 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 61 [2020-09-25 14:43:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:10,568 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 14:43:10,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 14:43:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 14:43:10,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:10,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:10,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:10,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 14:43:10,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:10,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425523957] [2020-09-25 14:43:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:43:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:43:15,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:43:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:43:15,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 14:43:16,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:16,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:16,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425523957] [2020-09-25 14:43:16,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:16,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:16,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67924249] [2020-09-25 14:43:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:16,205 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 14:43:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:18,493 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 14:43:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:43:18,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 14:43:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:18,503 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 14:43:18,504 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 14:43:18,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 14:43:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 14:43:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 14:43:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 14:43:18,559 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 144 [2020-09-25 14:43:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:18,560 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 14:43:18,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 14:43:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 14:43:18,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:18,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:18,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:18,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 14:43:18,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:18,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069665449] [2020-09-25 14:43:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 14:43:23,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4653 [2020-09-25 14:43:23,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 14:43:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:43:23,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:23,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069665449] [2020-09-25 14:43:23,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:23,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:23,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444240036] [2020-09-25 14:43:23,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:23,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:23,672 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 8 states. [2020-09-25 14:43:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:26,893 INFO L93 Difference]: Finished difference Result 1971 states and 2691 transitions. [2020-09-25 14:43:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:26,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-09-25 14:43:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:26,903 INFO L225 Difference]: With dead ends: 1971 [2020-09-25 14:43:26,904 INFO L226 Difference]: Without dead ends: 1285 [2020-09-25 14:43:26,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2020-09-25 14:43:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1046. [2020-09-25 14:43:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 14:43:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1363 transitions. [2020-09-25 14:43:26,979 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1363 transitions. Word has length 150 [2020-09-25 14:43:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:26,980 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1363 transitions. [2020-09-25 14:43:26,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1363 transitions. [2020-09-25 14:43:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 14:43:26,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:26,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:26,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:26,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 14:43:26,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:26,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698135419] [2020-09-25 14:43:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:32,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:43:32,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:43:32,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:32,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:43:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:32,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:32,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:43:32,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 14:43:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:32,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:43:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:32,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698135419] [2020-09-25 14:43:32,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:32,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:43:32,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548720458] [2020-09-25 14:43:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:32,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:32,623 INFO L87 Difference]: Start difference. First operand 1046 states and 1363 transitions. Second operand 8 states. [2020-09-25 14:43:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:35,433 INFO L93 Difference]: Finished difference Result 3175 states and 4457 transitions. [2020-09-25 14:43:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:35,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-09-25 14:43:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:35,449 INFO L225 Difference]: With dead ends: 3175 [2020-09-25 14:43:35,449 INFO L226 Difference]: Without dead ends: 2144 [2020-09-25 14:43:35,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-25 14:43:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1658. [2020-09-25 14:43:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-25 14:43:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2189 transitions. [2020-09-25 14:43:35,526 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2189 transitions. Word has length 183 [2020-09-25 14:43:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:35,526 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2189 transitions. [2020-09-25 14:43:35,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2189 transitions. [2020-09-25 14:43:35,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 14:43:35,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:35,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 14:43:35,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:35,533 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash -967098922, now seen corresponding path program 1 times [2020-09-25 14:43:35,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:35,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547012400] [2020-09-25 14:43:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:40,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 14:43:40,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:43:40,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:40,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:43:40,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:40,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:40,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:40,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 14:43:40,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:40,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:43:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:41,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547012400] [2020-09-25 14:43:41,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:41,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:41,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31494067] [2020-09-25 14:43:41,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:41,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:41,356 INFO L87 Difference]: Start difference. First operand 1658 states and 2189 transitions. Second operand 9 states. [2020-09-25 14:43:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:45,196 INFO L93 Difference]: Finished difference Result 3639 states and 5103 transitions. [2020-09-25 14:43:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:43:45,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2020-09-25 14:43:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:45,211 INFO L225 Difference]: With dead ends: 3639 [2020-09-25 14:43:45,212 INFO L226 Difference]: Without dead ends: 2458 [2020-09-25 14:43:45,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:43:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-09-25 14:43:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2423. [2020-09-25 14:43:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-09-25 14:43:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3134 transitions. [2020-09-25 14:43:45,321 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3134 transitions. Word has length 223 [2020-09-25 14:43:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:45,321 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3134 transitions. [2020-09-25 14:43:45,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:43:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3134 transitions. [2020-09-25 14:43:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 14:43:45,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:45,328 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:45,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:45,328 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash 139673377, now seen corresponding path program 1 times [2020-09-25 14:43:45,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:45,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999032846] [2020-09-25 14:43:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking...