/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/Problem02_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:07,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:07,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:07,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:07,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:07,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:07,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:07,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:07,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:07,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:07,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:07,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:07,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:07,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:07,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:07,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:07,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:07,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:07,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:07,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:07,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:07,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:07,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:07,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:07,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:07,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:07,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:07,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:07,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:07,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:07,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:07,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:07,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:07,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:07,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:07,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:07,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:07,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:07,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:07,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:07,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:07,196 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 18:21:07,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:07,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:07,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:07,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:07,236 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:07,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:07,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:07,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:07,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:07,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:07,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:07,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:07,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:07,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:07,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:07,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:07,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:07,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:07,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:07,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:07,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:07,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:07,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:07,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:07,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:07,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:07,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:07,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:07,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:07,243 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 18:21:07,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:07,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:07,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:07,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:07,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:07,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-24 18:21:07,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e3566196/c106ebf367654b6ab33814277a6e188c/FLAGdb8908c2a [2020-09-24 18:21:08,613 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:08,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-24 18:21:08,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e3566196/c106ebf367654b6ab33814277a6e188c/FLAGdb8908c2a [2020-09-24 18:21:08,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e3566196/c106ebf367654b6ab33814277a6e188c [2020-09-24 18:21:08,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:08,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:08,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:08,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:08,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:08,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:08" (1/1) ... [2020-09-24 18:21:08,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:08, skipping insertion in model container [2020-09-24 18:21:08,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:08" (1/1) ... [2020-09-24 18:21:08,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:08,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:09,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:09,448 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:09,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:09,657 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:09,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09 WrapperNode [2020-09-24 18:21:09,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:09,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:09,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:09,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:09,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (1/1) ... [2020-09-24 18:21:09,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:09,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:09,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:09,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:09,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (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 18:21:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:11,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:11,374 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:11,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:11 BoogieIcfgContainer [2020-09-24 18:21:11,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:11,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:11,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:11,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:11,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:08" (1/3) ... [2020-09-24 18:21:11,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341adf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:11, skipping insertion in model container [2020-09-24 18:21:11,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:09" (2/3) ... [2020-09-24 18:21:11,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341adf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:11, skipping insertion in model container [2020-09-24 18:21:11,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:11" (3/3) ... [2020-09-24 18:21:11,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-24 18:21:11,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:11,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:11,455 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:11,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:11,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:11,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:11,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:11,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:11,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:11,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:11,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 18:21:11,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:11,582 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] [2020-09-24 18:21:11,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-24 18:21:11,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:11,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601167599] [2020-09-24 18:21:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 18:21:16,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:21:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:21:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:21:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:21:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:21:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:17,138 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 18:21:17,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601167599] [2020-09-24 18:21:17,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:17,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:21:17,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921977962] [2020-09-24 18:21:17,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:17,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:17,172 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-24 18:21:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:19,448 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:21:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:19,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-09-24 18:21:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:19,490 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:21:19,491 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:21:19,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:21:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:21:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:21:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-24 18:21:19,638 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 119 [2020-09-24 18:21:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:19,639 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-24 18:21:19,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-24 18:21:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 18:21:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:19,646 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:21:19,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:19,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash 165606425, now seen corresponding path program 1 times [2020-09-24 18:21:19,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:19,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638746383] [2020-09-24 18:21:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:21:23,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:21:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4093 [2020-09-24 18:21:23,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:21:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:21:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:23,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:21:23,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:23,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:21:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:21:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:21:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:24,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638746383] [2020-09-24 18:21:24,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:24,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:24,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424810778] [2020-09-24 18:21:24,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:24,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:24,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:24,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:24,072 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-24 18:21:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:26,326 INFO L93 Difference]: Finished difference Result 1546 states and 2048 transitions. [2020-09-24 18:21:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:26,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 18:21:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:26,337 INFO L225 Difference]: With dead ends: 1546 [2020-09-24 18:21:26,338 INFO L226 Difference]: Without dead ends: 955 [2020-09-24 18:21:26,344 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 18:21:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-24 18:21:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 919. [2020-09-24 18:21:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-24 18:21:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1119 transitions. [2020-09-24 18:21:26,403 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1119 transitions. Word has length 145 [2020-09-24 18:21:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:26,403 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1119 transitions. [2020-09-24 18:21:26,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1119 transitions. [2020-09-24 18:21:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 18:21:26,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:26,408 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] [2020-09-24 18:21:26,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:26,409 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:26,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-24 18:21:26,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:26,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800121689] [2020-09-24 18:21:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:30,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 18:21:30,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4341 [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:21:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:30,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:30,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:30,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:30,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:30,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:21:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:21:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:31,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800121689] [2020-09-24 18:21:31,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:31,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:31,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078613322] [2020-09-24 18:21:31,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:31,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:31,072 INFO L87 Difference]: Start difference. First operand 919 states and 1119 transitions. Second operand 5 states. [2020-09-24 18:21:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:33,362 INFO L93 Difference]: Finished difference Result 2154 states and 2766 transitions. [2020-09-24 18:21:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:33,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-24 18:21:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:33,371 INFO L225 Difference]: With dead ends: 2154 [2020-09-24 18:21:33,371 INFO L226 Difference]: Without dead ends: 1257 [2020-09-24 18:21:33,375 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 18:21:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-09-24 18:21:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1225. [2020-09-24 18:21:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-09-24 18:21:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1494 transitions. [2020-09-24 18:21:33,420 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1494 transitions. Word has length 153 [2020-09-24 18:21:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:33,421 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1494 transitions. [2020-09-24 18:21:33,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1494 transitions. [2020-09-24 18:21:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 18:21:33,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:33,426 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] [2020-09-24 18:21:33,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:33,427 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-24 18:21:33,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:33,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28377756] [2020-09-24 18:21:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 18:21:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 18:21:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:21:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:38,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:38,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:38,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:38,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:38,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:38,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:21:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:21:38,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:21:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:38,731 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 18:21:38,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28377756] [2020-09-24 18:21:38,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:38,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:38,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788051088] [2020-09-24 18:21:38,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:38,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:38,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:38,739 INFO L87 Difference]: Start difference. First operand 1225 states and 1494 transitions. Second operand 5 states. [2020-09-24 18:21:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:40,525 INFO L93 Difference]: Finished difference Result 2786 states and 3538 transitions. [2020-09-24 18:21:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:40,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-24 18:21:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:40,535 INFO L225 Difference]: With dead ends: 2786 [2020-09-24 18:21:40,535 INFO L226 Difference]: Without dead ends: 1583 [2020-09-24 18:21:40,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 18:21:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-24 18:21:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1382. [2020-09-24 18:21:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-09-24 18:21:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1679 transitions. [2020-09-24 18:21:40,592 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1679 transitions. Word has length 157 [2020-09-24 18:21:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:40,592 INFO L479 AbstractCegarLoop]: Abstraction has 1382 states and 1679 transitions. [2020-09-24 18:21:40,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1679 transitions. [2020-09-24 18:21:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 18:21:40,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:40,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:40,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:40,601 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:40,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:40,602 INFO L82 PathProgramCache]: Analyzing trace with hash 92363882, now seen corresponding path program 1 times [2020-09-24 18:21:40,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:40,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929174427] [2020-09-24 18:21:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 18:21:45,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-24 18:21:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-24 18:21:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:21:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:21:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:45,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:21:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:45,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:21:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:21:45,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:21:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 18:21:46,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929174427] [2020-09-24 18:21:46,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:46,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:46,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668832207] [2020-09-24 18:21:46,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:46,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:46,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:46,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:46,017 INFO L87 Difference]: Start difference. First operand 1382 states and 1679 transitions. Second operand 5 states. [2020-09-24 18:21:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:48,183 INFO L93 Difference]: Finished difference Result 3082 states and 3877 transitions. [2020-09-24 18:21:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:48,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-24 18:21:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:48,201 INFO L225 Difference]: With dead ends: 3082 [2020-09-24 18:21:48,202 INFO L226 Difference]: Without dead ends: 1722 [2020-09-24 18:21:48,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:48,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-09-24 18:21:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1686. [2020-09-24 18:21:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-09-24 18:21:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2053 transitions. [2020-09-24 18:21:48,264 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2053 transitions. Word has length 188 [2020-09-24 18:21:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:48,265 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 2053 transitions. [2020-09-24 18:21:48,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2053 transitions. [2020-09-24 18:21:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:21:48,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:48,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:48,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:48,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1708323310, now seen corresponding path program 1 times [2020-09-24 18:21:48,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:48,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743535843] [2020-09-24 18:21:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:21:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:21:53,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:21:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 18:21:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:21:53,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:53,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:21:53,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:21:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:21:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:53,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743535843] [2020-09-24 18:21:53,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:53,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:53,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761015740] [2020-09-24 18:21:53,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:53,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:53,688 INFO L87 Difference]: Start difference. First operand 1686 states and 2053 transitions. Second operand 7 states. [2020-09-24 18:21:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:55,969 INFO L93 Difference]: Finished difference Result 4627 states and 5901 transitions. [2020-09-24 18:21:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:55,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-09-24 18:21:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:55,992 INFO L225 Difference]: With dead ends: 4627 [2020-09-24 18:21:55,992 INFO L226 Difference]: Without dead ends: 2963 [2020-09-24 18:21:56,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-09-24 18:21:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2303. [2020-09-24 18:21:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-09-24 18:21:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2895 transitions. [2020-09-24 18:21:56,091 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2895 transitions. Word has length 199 [2020-09-24 18:21:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:56,091 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2895 transitions. [2020-09-24 18:21:56,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2895 transitions. [2020-09-24 18:21:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-09-24 18:21:56,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:56,106 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:56,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:21:56,106 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash -54223879, now seen corresponding path program 1 times [2020-09-24 18:21:56,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:56,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283377541] [2020-09-24 18:21:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking...