/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:04,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:04,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:04,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:04,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:04,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:04,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:04,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:04,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:04,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:04,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:04,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:04,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:04,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:04,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:04,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:04,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:04,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:04,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:04,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:04,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:04,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:04,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:04,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:04,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:04,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:04,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:04,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:04,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:04,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:04,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:04,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:04,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:04,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:04,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:04,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:04,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:04,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:04,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:04,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:04,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:04,266 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 07:52:04,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:04,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:04,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:04,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:04,326 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:04,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:04,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:04,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:04,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:04,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:04,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:04,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:04,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:04,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:04,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:04,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:04,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:04,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:04,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:04,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:04,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:04,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:04,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:04,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:04,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:04,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:04,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:04,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:04,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:04,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:04,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:04,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:04,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:04,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:04,870 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:04,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 07:52:04,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b52945f3/7c9a1641dd6044d19c7cc61bf0aa1b83/FLAGdc91a75f2 [2020-09-25 07:52:05,645 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:05,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 07:52:05,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b52945f3/7c9a1641dd6044d19c7cc61bf0aa1b83/FLAGdc91a75f2 [2020-09-25 07:52:05,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b52945f3/7c9a1641dd6044d19c7cc61bf0aa1b83 [2020-09-25 07:52:05,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:05,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:05,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:05,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:05,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:05,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:05" (1/1) ... [2020-09-25 07:52:05,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401e0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:05, skipping insertion in model container [2020-09-25 07:52:05,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:05" (1/1) ... [2020-09-25 07:52:05,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:06,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:06,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:06,527 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:06,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:06,805 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06 WrapperNode [2020-09-25 07:52:06,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:06,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:06,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:06,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:06,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (1/1) ... [2020-09-25 07:52:06,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:06,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:06,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:06,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:06,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (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 07:52:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:08,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:08,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:08,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:08 BoogieIcfgContainer [2020-09-25 07:52:08,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:08,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:08,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:08,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:05" (1/3) ... [2020-09-25 07:52:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37827f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:08, skipping insertion in model container [2020-09-25 07:52:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:06" (2/3) ... [2020-09-25 07:52:08,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37827f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:08, skipping insertion in model container [2020-09-25 07:52:08,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:08" (3/3) ... [2020-09-25 07:52:08,363 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 07:52:08,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:08,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:08,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:08,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:08,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:08,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:08,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:08,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:08,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:08,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:08,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:52:08,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:08,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:08,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 07:52:08,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:08,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621192487] [2020-09-25 07:52:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 07:52:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-09-25 07:52:13,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:13,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:52:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 07:52:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:14,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:14,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:14,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:52:14,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:14,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:14,363 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 07:52:14,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621192487] [2020-09-25 07:52:14,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:14,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:14,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797822883] [2020-09-25 07:52:14,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:14,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:14,402 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:17,065 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:52:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:17,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 07:52:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:17,118 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:52:17,118 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:52:17,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:52:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:52:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:52:17,299 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 07:52:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:17,303 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:52:17,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:52:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:52:17,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:17,322 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:17,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:17,323 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 07:52:17,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:17,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212023185] [2020-09-25 07:52:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:52:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:52:22,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:22,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:52:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:52:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:52:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:22,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:52:22,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:22,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:52:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:52:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:22,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:22,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 07:52:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:22,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:22,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212023185] [2020-09-25 07:52:22,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:22,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:22,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047715371] [2020-09-25 07:52:22,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:22,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:22,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:22,738 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 07:52:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:25,534 INFO L93 Difference]: Finished difference Result 1660 states and 2153 transitions. [2020-09-25 07:52:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:52:25,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 07:52:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:25,546 INFO L225 Difference]: With dead ends: 1660 [2020-09-25 07:52:25,546 INFO L226 Difference]: Without dead ends: 1081 [2020-09-25 07:52:25,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-25 07:52:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 906. [2020-09-25 07:52:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-09-25 07:52:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1105 transitions. [2020-09-25 07:52:25,617 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1105 transitions. Word has length 175 [2020-09-25 07:52:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:25,618 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1105 transitions. [2020-09-25 07:52:25,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1105 transitions. [2020-09-25 07:52:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:52:25,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:25,630 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:25,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:25,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 07:52:25,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:25,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400335755] [2020-09-25 07:52:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:52:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 07:52:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:30,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:52:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:30,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:30,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:52:30,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:30,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:30,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:52:30,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 07:52:30,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:30,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:31,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400335755] [2020-09-25 07:52:31,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:31,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:31,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584348143] [2020-09-25 07:52:31,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:31,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:31,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:31,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:31,019 INFO L87 Difference]: Start difference. First operand 906 states and 1105 transitions. Second operand 7 states. [2020-09-25 07:52:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:33,591 INFO L93 Difference]: Finished difference Result 2571 states and 3282 transitions. [2020-09-25 07:52:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:33,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 07:52:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:33,609 INFO L225 Difference]: With dead ends: 2571 [2020-09-25 07:52:33,609 INFO L226 Difference]: Without dead ends: 1689 [2020-09-25 07:52:33,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-09-25 07:52:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1566. [2020-09-25 07:52:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-25 07:52:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1934 transitions. [2020-09-25 07:52:33,718 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1934 transitions. Word has length 176 [2020-09-25 07:52:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:33,719 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1934 transitions. [2020-09-25 07:52:33,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1934 transitions. [2020-09-25 07:52:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 07:52:33,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:33,727 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:33,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:33,730 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:33,731 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 07:52:33,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:33,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206059483] [2020-09-25 07:52:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:52:38,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:52:38,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:52:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:52:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 07:52:38,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:52:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:52:39,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 07:52:39,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206059483] [2020-09-25 07:52:39,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:39,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:39,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072942199] [2020-09-25 07:52:39,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:39,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:39,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:39,212 INFO L87 Difference]: Start difference. First operand 1566 states and 1934 transitions. Second operand 5 states. [2020-09-25 07:52:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:41,416 INFO L93 Difference]: Finished difference Result 4138 states and 5281 transitions. [2020-09-25 07:52:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:41,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 07:52:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:41,431 INFO L225 Difference]: With dead ends: 4138 [2020-09-25 07:52:41,431 INFO L226 Difference]: Without dead ends: 2596 [2020-09-25 07:52:41,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2020-09-25 07:52:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2420. [2020-09-25 07:52:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 07:52:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3057 transitions. [2020-09-25 07:52:41,506 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3057 transitions. Word has length 183 [2020-09-25 07:52:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:41,507 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3057 transitions. [2020-09-25 07:52:41,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3057 transitions. [2020-09-25 07:52:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 07:52:41,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:41,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:41,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:41,519 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-25 07:52:41,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:41,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913933650] [2020-09-25 07:52:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:52:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 07:52:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:52:46,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:52:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:52:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:46,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:52:46,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:52:46,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 07:52:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:52:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:46,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913933650] [2020-09-25 07:52:46,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:46,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:46,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825700805] [2020-09-25 07:52:46,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:46,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:46,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:46,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:46,994 INFO L87 Difference]: Start difference. First operand 2420 states and 3057 transitions. Second operand 7 states. [2020-09-25 07:52:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:51,036 INFO L93 Difference]: Finished difference Result 6610 states and 8946 transitions. [2020-09-25 07:52:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:52:51,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 07:52:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:51,074 INFO L225 Difference]: With dead ends: 6610 [2020-09-25 07:52:51,074 INFO L226 Difference]: Without dead ends: 4214 [2020-09-25 07:52:51,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2020-09-25 07:52:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3672. [2020-09-25 07:52:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-09-25 07:52:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4574 transitions. [2020-09-25 07:52:51,248 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4574 transitions. Word has length 205 [2020-09-25 07:52:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:51,249 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4574 transitions. [2020-09-25 07:52:51,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4574 transitions. [2020-09-25 07:52:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 07:52:51,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:51,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:51,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:51,269 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -102390325, now seen corresponding path program 1 times [2020-09-25 07:52:51,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:51,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641538490] [2020-09-25 07:52:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking...