/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=0.2 --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/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:10,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:10,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:10,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:10,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:10,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:10,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:10,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:10,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:10,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:10,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:10,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:10,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:10,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:10,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:10,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:10,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:10,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:10,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:10,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:10,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:10,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:10,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:10,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:10,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:10,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:10,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:10,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:10,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:10,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:10,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:10,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:10,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:10,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:10,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:10,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:10,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:10,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:10,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:10,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:10,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:10,175 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 04:28:10,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:10,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:10,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:10,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:10,203 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:10,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:10,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:10,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:10,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:10,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:10,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:10,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:10,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:10,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:10,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:10,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:10,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:10,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:10,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:10,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:10,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:10,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:10,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:10,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:10,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:10,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:10,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:10,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:10,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:10,208 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:28:10,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:10,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:10,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:10,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:10,677 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:10,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 04:28:10,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11637d1c1/98aaaf4818ae42e689bfe35b5174c283/FLAG8e7ac2f7a [2020-09-25 04:28:11,409 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:11,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 04:28:11,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11637d1c1/98aaaf4818ae42e689bfe35b5174c283/FLAG8e7ac2f7a [2020-09-25 04:28:11,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11637d1c1/98aaaf4818ae42e689bfe35b5174c283 [2020-09-25 04:28:11,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:11,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:11,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:11,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:11,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:11,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:11" (1/1) ... [2020-09-25 04:28:11,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:11, skipping insertion in model container [2020-09-25 04:28:11,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:11" (1/1) ... [2020-09-25 04:28:11,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:11,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:12,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:12,459 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:12,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:12,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:12,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12 WrapperNode [2020-09-25 04:28:12,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:12,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:12,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:12,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:12,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (1/1) ... [2020-09-25 04:28:12,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:12,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:12,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:12,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:12,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (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 04:28:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:14,058 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:14,059 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:14,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:14 BoogieIcfgContainer [2020-09-25 04:28:14,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:14,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:14,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:14,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:14,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:11" (1/3) ... [2020-09-25 04:28:14,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:14, skipping insertion in model container [2020-09-25 04:28:14,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:12" (2/3) ... [2020-09-25 04:28:14,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:14, skipping insertion in model container [2020-09-25 04:28:14,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:14" (3/3) ... [2020-09-25 04:28:14,077 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 04:28:14,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:14,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:14,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:14,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:14,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:14,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:14,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:14,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:14,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:14,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:14,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 04:28:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:14,211 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, 1, 1, 1, 1] [2020-09-25 04:28:14,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:14,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:14,220 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 04:28:14,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:14,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 04:28:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:28:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:28:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:19,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:28:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 04:28:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:28:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:19,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:19,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:28:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:19,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:28:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:19,925 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 04:28:19,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 04:28:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:19,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:19,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395686260] [2020-09-25 04:28:19,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:19,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:19,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:19,962 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:22,169 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 04:28:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:22,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 04:28:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:22,197 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 04:28:22,197 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 04:28:22,208 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 04:28:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 04:28:22,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 04:28:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 04:28:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 04:28:22,317 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 04:28:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:22,318 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 04:28:22,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 04:28:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 04:28:22,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:22,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:22,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:22,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 04:28:22,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:22,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144277500] [2020-09-25 04:28:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 04:28:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:28:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:28:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:28:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:28:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:27,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:28:27,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:28:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:28:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:28:27,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:28:27,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:27,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144277500] [2020-09-25 04:28:27,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:27,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:28:27,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769007732] [2020-09-25 04:28:27,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:27,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:27,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:27,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:27,703 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 7 states. [2020-09-25 04:28:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:30,002 INFO L93 Difference]: Finished difference Result 1713 states and 2173 transitions. [2020-09-25 04:28:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:30,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 04:28:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:30,011 INFO L225 Difference]: With dead ends: 1713 [2020-09-25 04:28:30,012 INFO L226 Difference]: Without dead ends: 1120 [2020-09-25 04:28:30,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 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 04:28:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-09-25 04:28:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 968. [2020-09-25 04:28:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 04:28:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1222 transitions. [2020-09-25 04:28:30,078 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1222 transitions. Word has length 192 [2020-09-25 04:28:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:30,080 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1222 transitions. [2020-09-25 04:28:30,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1222 transitions. [2020-09-25 04:28:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 04:28:30,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:30,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:30,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:30,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 04:28:30,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:30,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998363877] [2020-09-25 04:28:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 04:28:35,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:28:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:35,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:28:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:35,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:28:35,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:35,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:35,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:28:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:28:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:35,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:28:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:35,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998363877] [2020-09-25 04:28:35,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:35,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:28:35,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728956268] [2020-09-25 04:28:35,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:35,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:35,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:35,457 INFO L87 Difference]: Start difference. First operand 968 states and 1222 transitions. Second operand 7 states. [2020-09-25 04:28:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:37,976 INFO L93 Difference]: Finished difference Result 2812 states and 3744 transitions. [2020-09-25 04:28:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:37,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 04:28:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:37,988 INFO L225 Difference]: With dead ends: 2812 [2020-09-25 04:28:37,989 INFO L226 Difference]: Without dead ends: 1866 [2020-09-25 04:28:37,993 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 04:28:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2020-09-25 04:28:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1745. [2020-09-25 04:28:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-09-25 04:28:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2231 transitions. [2020-09-25 04:28:38,057 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2231 transitions. Word has length 193 [2020-09-25 04:28:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:38,058 INFO L479 AbstractCegarLoop]: Abstraction has 1745 states and 2231 transitions. [2020-09-25 04:28:38,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2231 transitions. [2020-09-25 04:28:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 04:28:38,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:38,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:38,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:38,067 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash 257301984, now seen corresponding path program 1 times [2020-09-25 04:28:38,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:38,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321609449] [2020-09-25 04:28:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 04:28:43,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:43,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:28:43,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:28:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:28:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:43,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 04:28:43,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:28:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:43,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321609449] [2020-09-25 04:28:43,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:43,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:28:43,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97372244] [2020-09-25 04:28:43,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:28:43,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:28:43,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:28:43,590 INFO L87 Difference]: Start difference. First operand 1745 states and 2231 transitions. Second operand 8 states. [2020-09-25 04:28:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:47,295 INFO L93 Difference]: Finished difference Result 5622 states and 7692 transitions. [2020-09-25 04:28:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:28:47,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-25 04:28:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:47,319 INFO L225 Difference]: With dead ends: 5622 [2020-09-25 04:28:47,320 INFO L226 Difference]: Without dead ends: 3687 [2020-09-25 04:28:47,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-09-25 04:28:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3613. [2020-09-25 04:28:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-09-25 04:28:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4488 transitions. [2020-09-25 04:28:47,435 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4488 transitions. Word has length 196 [2020-09-25 04:28:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:47,435 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 4488 transitions. [2020-09-25 04:28:47,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:28:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4488 transitions. [2020-09-25 04:28:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 04:28:47,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:47,448 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:47,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:47,449 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:47,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1253467920, now seen corresponding path program 1 times [2020-09-25 04:28:47,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:47,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119142413] [2020-09-25 04:28:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:52,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:28:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:28:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:28:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:52,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:28:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:28:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:28:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:52,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:28:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:52,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119142413] [2020-09-25 04:28:52,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:52,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:28:52,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361937081] [2020-09-25 04:28:52,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:28:52,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:28:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:28:52,782 INFO L87 Difference]: Start difference. First operand 3613 states and 4488 transitions. Second operand 8 states. [2020-09-25 04:28:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:55,472 INFO L93 Difference]: Finished difference Result 10157 states and 13217 transitions. [2020-09-25 04:28:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:28:55,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-25 04:28:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:55,507 INFO L225 Difference]: With dead ends: 10157 [2020-09-25 04:28:55,507 INFO L226 Difference]: Without dead ends: 6566 [2020-09-25 04:28:55,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:28:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2020-09-25 04:28:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 6528. [2020-09-25 04:28:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6528 states. [2020-09-25 04:28:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 8226 transitions. [2020-09-25 04:28:55,697 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 8226 transitions. Word has length 210 [2020-09-25 04:28:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:55,697 INFO L479 AbstractCegarLoop]: Abstraction has 6528 states and 8226 transitions. [2020-09-25 04:28:55,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:28:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 8226 transitions. [2020-09-25 04:28:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 04:28:55,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:55,722 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:55,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:55,723 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash -424052664, now seen corresponding path program 1 times [2020-09-25 04:28:55,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:55,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640268080] [2020-09-25 04:28:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:00,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:29:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:00,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:29:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:00,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:00,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:00,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:00,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:29:00,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:29:00,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:00,992 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 04:29:00,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640268080] [2020-09-25 04:29:00,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:00,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:00,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560060188] [2020-09-25 04:29:00,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:00,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:00,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:00,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:00,994 INFO L87 Difference]: Start difference. First operand 6528 states and 8226 transitions. Second operand 7 states.