/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=SMALLEST --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:34,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:34,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:34,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:34,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:34,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:34,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:34,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:34,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:34,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:34,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:34,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:34,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:34,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:34,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:34,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:34,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:34,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:34,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:34,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:34,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:34,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:34,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:34,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:34,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:34,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:34,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:34,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:34,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:34,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:34,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:34,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:34,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:34,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:34,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:34,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:34,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:34,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:34,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:34,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:34,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:34,231 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 [2020-09-24 18:20:34,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:34,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:34,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:34,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:34,291 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:34,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:34,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:34,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:34,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:34,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:34,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:34,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:34,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:34,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:34,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:34,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:34,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:34,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:34,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:34,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:34,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:34,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:34,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:34,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:34,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:34,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:34,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:34,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:34,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:34,296 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:34,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:34,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:34,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:34,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:34,780 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:34,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 18:20:34,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cb483a9/04fea15b9ad54bc39de47cf5c251330c/FLAG9c9ccf8dc [2020-09-24 18:20:35,552 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:35,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 18:20:35,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cb483a9/04fea15b9ad54bc39de47cf5c251330c/FLAG9c9ccf8dc [2020-09-24 18:20:35,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7cb483a9/04fea15b9ad54bc39de47cf5c251330c [2020-09-24 18:20:35,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:35,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:35,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:35,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:35,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:35,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:35" (1/1) ... [2020-09-24 18:20:35,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7e2148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:35, skipping insertion in model container [2020-09-24 18:20:35,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:35" (1/1) ... [2020-09-24 18:20:35,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:35,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:36,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:36,518 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:36,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:36,725 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:36,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36 WrapperNode [2020-09-24 18:20:36,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:36,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:36,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:36,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:36,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (1/1) ... [2020-09-24 18:20:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:36,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:36,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:36,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:36,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (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 [2020-09-24 18:20:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:38,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:38,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:38,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:38 BoogieIcfgContainer [2020-09-24 18:20:38,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:38,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:38,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:38,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:38,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:35" (1/3) ... [2020-09-24 18:20:38,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2189210e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:38, skipping insertion in model container [2020-09-24 18:20:38,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:36" (2/3) ... [2020-09-24 18:20:38,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2189210e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:38, skipping insertion in model container [2020-09-24 18:20:38,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:38" (3/3) ... [2020-09-24 18:20:38,400 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-24 18:20:38,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:38,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:38,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:38,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:38,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:38,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:38,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:38,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:38,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:38,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:38,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:20:38,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:38,547 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] [2020-09-24 18:20:38,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-24 18:20:38,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:38,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117169728] [2020-09-24 18:20:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:43,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 18:20:43,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:20:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:20:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:20:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 18:20:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:20:44,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:44,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:44,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117169728] [2020-09-24 18:20:44,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:44,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:20:44,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481019890] [2020-09-24 18:20:44,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:44,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:44,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:44,296 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 18:20:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:46,807 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-24 18:20:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:46,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:20:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:46,837 INFO L225 Difference]: With dead ends: 1259 [2020-09-24 18:20:46,837 INFO L226 Difference]: Without dead ends: 685 [2020-09-24 18:20:46,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-24 18:20:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-24 18:20:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:20:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-24 18:20:46,951 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-24 18:20:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:46,953 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-24 18:20:46,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-24 18:20:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 18:20:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:46,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:20:46,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:46,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-24 18:20:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146763886] [2020-09-24 18:20:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:51,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:20:51,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:20:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:20:52,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:20:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:20:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:20:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:52,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:52,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:20:52,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:52,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146763886] [2020-09-24 18:20:52,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:52,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:20:52,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990716786] [2020-09-24 18:20:52,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:52,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:52,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:52,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:52,257 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-24 18:20:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:54,222 INFO L93 Difference]: Finished difference Result 1400 states and 1721 transitions. [2020-09-24 18:20:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:54,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-24 18:20:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:54,231 INFO L225 Difference]: With dead ends: 1400 [2020-09-24 18:20:54,231 INFO L226 Difference]: Without dead ends: 821 [2020-09-24 18:20:54,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-09-24 18:20:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 759. [2020-09-24 18:20:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-09-24 18:20:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 924 transitions. [2020-09-24 18:20:54,300 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 924 transitions. Word has length 163 [2020-09-24 18:20:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:54,302 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 924 transitions. [2020-09-24 18:20:54,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 924 transitions. [2020-09-24 18:20:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 18:20:54,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:54,309 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:20:54,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:54,309 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:54,310 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-24 18:20:54,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:54,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385613715] [2020-09-24 18:20:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:59,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:20:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:20:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:20:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 18:20:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:59,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:20:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:20:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:59,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385613715] [2020-09-24 18:20:59,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:59,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:59,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936162109] [2020-09-24 18:20:59,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:59,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:59,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:59,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:59,665 INFO L87 Difference]: Start difference. First operand 759 states and 924 transitions. Second operand 5 states. [2020-09-24 18:21:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:01,505 INFO L93 Difference]: Finished difference Result 1960 states and 2495 transitions. [2020-09-24 18:21:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:01,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-24 18:21:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:01,514 INFO L225 Difference]: With dead ends: 1960 [2020-09-24 18:21:01,514 INFO L226 Difference]: Without dead ends: 1225 [2020-09-24 18:21:01,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-09-24 18:21:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1049. [2020-09-24 18:21:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-09-24 18:21:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1265 transitions. [2020-09-24 18:21:01,556 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1265 transitions. Word has length 163 [2020-09-24 18:21:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:01,556 INFO L479 AbstractCegarLoop]: Abstraction has 1049 states and 1265 transitions. [2020-09-24 18:21:01,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1265 transitions. [2020-09-24 18:21:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:21:01,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:01,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:01,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:01,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1302141170, now seen corresponding path program 1 times [2020-09-24 18:21:01,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:01,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922172171] [2020-09-24 18:21:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 18:21:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-09-24 18:21:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 18:21:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 18:21:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:06,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:06,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:06,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:06,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:21:06,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:21:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:21:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:06,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922172171] [2020-09-24 18:21:06,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:06,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:06,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392468038] [2020-09-24 18:21:06,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:06,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:06,955 INFO L87 Difference]: Start difference. First operand 1049 states and 1265 transitions. Second operand 5 states. [2020-09-24 18:21:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:09,083 INFO L93 Difference]: Finished difference Result 2395 states and 2976 transitions. [2020-09-24 18:21:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:09,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-24 18:21:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:09,095 INFO L225 Difference]: With dead ends: 2395 [2020-09-24 18:21:09,096 INFO L226 Difference]: Without dead ends: 1370 [2020-09-24 18:21:09,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2020-09-24 18:21:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1337. [2020-09-24 18:21:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-09-24 18:21:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1632 transitions. [2020-09-24 18:21:09,185 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1632 transitions. Word has length 177 [2020-09-24 18:21:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:09,186 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1632 transitions. [2020-09-24 18:21:09,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1632 transitions. [2020-09-24 18:21:09,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:21:09,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:09,195 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] [2020-09-24 18:21:09,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:09,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:09,196 INFO L82 PathProgramCache]: Analyzing trace with hash -251691041, now seen corresponding path program 1 times [2020-09-24 18:21:09,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:09,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999834688] [2020-09-24 18:21:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:21:14,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 18:21:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:21:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:21:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:14,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:21:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:21:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:21:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:14,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:21:14,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 18:21:14,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:21:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:14,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999834688] [2020-09-24 18:21:14,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:14,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:14,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372149340] [2020-09-24 18:21:14,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:14,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:14,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:14,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:14,837 INFO L87 Difference]: Start difference. First operand 1337 states and 1632 transitions. Second operand 7 states. [2020-09-24 18:21:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:18,215 INFO L93 Difference]: Finished difference Result 3636 states and 4778 transitions. [2020-09-24 18:21:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:18,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 18:21:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:18,234 INFO L225 Difference]: With dead ends: 3636 [2020-09-24 18:21:18,234 INFO L226 Difference]: Without dead ends: 2124 [2020-09-24 18:21:18,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2020-09-24 18:21:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1949. [2020-09-24 18:21:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-09-24 18:21:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2322 transitions. [2020-09-24 18:21:18,340 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2322 transitions. Word has length 193 [2020-09-24 18:21:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:18,340 INFO L479 AbstractCegarLoop]: Abstraction has 1949 states and 2322 transitions. [2020-09-24 18:21:18,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2322 transitions. [2020-09-24 18:21:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 18:21:18,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:18,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:21:18,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:18,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1362742360, now seen corresponding path program 1 times [2020-09-24 18:21:18,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:18,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132713500] [2020-09-24 18:21:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...