/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=BIGGEST --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:34:40,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:34:40,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:34:40,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:34:40,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:34:40,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:34:40,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:34:40,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:34:40,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:34:40,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:34:40,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:34:40,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:34:40,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:34:40,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:34:40,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:34:40,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:34:40,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:34:40,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:34:40,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:34:40,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:34:40,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:34:40,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:34:40,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:34:40,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:34:40,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:34:40,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:34:40,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:34:40,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:34:40,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:34:40,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:34:40,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:34:40,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:34:40,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:34:40,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:34:40,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:34:40,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:34:40,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:34:40,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:34:40,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:34:40,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:34:40,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:34:40,359 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 20:34:40,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:34:40,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:34:40,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:34:40,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:34:40,405 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:34:40,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:34:40,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:34:40,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:34:40,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:34:40,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:34:40,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:34:40,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:34:40,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:34:40,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:34:40,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:34:40,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:34:40,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:34:40,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:34:40,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:34:40,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:34:40,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:34:40,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:34:40,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:34:40,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:34:40,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:34:40,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:34:40,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:34:40,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:34:40,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:34:40,411 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:34:40,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:34:40,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:34:40,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:34:40,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:34:40,882 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:34:40,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-24 20:34:40,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aca192334/644557b8fb274a1e967b18c345c7ffb2/FLAG098c639b8 [2020-09-24 20:34:41,632 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:34:41,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-24 20:34:41,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aca192334/644557b8fb274a1e967b18c345c7ffb2/FLAG098c639b8 [2020-09-24 20:34:41,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aca192334/644557b8fb274a1e967b18c345c7ffb2 [2020-09-24 20:34:41,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:34:41,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:34:41,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:34:41,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:34:41,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:34:41,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:34:41" (1/1) ... [2020-09-24 20:34:41,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:41, skipping insertion in model container [2020-09-24 20:34:41,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:34:41" (1/1) ... [2020-09-24 20:34:41,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:34:41,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:34:42,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:34:42,386 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:34:42,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:34:42,637 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:34:42,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42 WrapperNode [2020-09-24 20:34:42,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:34:42,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:34:42,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:34:42,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:34:42,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (1/1) ... [2020-09-24 20:34:42,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:34:42,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:34:42,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:34:42,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:34:42,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (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 20:34:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:34:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:34:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:34:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:34:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:34:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:34:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:34:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:34:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:34:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:34:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:34:44,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:34:44,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:34:44,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:34:44 BoogieIcfgContainer [2020-09-24 20:34:44,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:34:44,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:34:44,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:34:44,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:34:44,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:34:41" (1/3) ... [2020-09-24 20:34:44,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:34:44, skipping insertion in model container [2020-09-24 20:34:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:34:42" (2/3) ... [2020-09-24 20:34:44,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:34:44, skipping insertion in model container [2020-09-24 20:34:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:34:44" (3/3) ... [2020-09-24 20:34:44,254 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-09-24 20:34:44,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:34:44,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:34:44,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:34:44,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:34:44,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:34:44,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:34:44,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:34:44,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:34:44,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:34:44,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:34:44,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:34:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 20:34:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 20:34:44,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:34:44,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:34:44,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:34:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:34:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 341026450, now seen corresponding path program 1 times [2020-09-24 20:34:44,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:34:44,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-24 20:34:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:34:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:49,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 20:34:49,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:34:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:34:49,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:34:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:34:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 20:34:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 20:34:50,494 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-09-24 20:34:50,673 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-09-24 20:34:50,962 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-09-24 20:34:51,128 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-09-24 20:34:51,427 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-09-24 20:34:51,574 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-09-24 20:34:51,753 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-24 20:34:51,920 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2020-09-24 20:34:52,131 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 27 [2020-09-24 20:34:52,293 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 25 [2020-09-24 20:34:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:34:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:52,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:52,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:34:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:34:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:34:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:34:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:34:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:34:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:34:52,984 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 20:34:52,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-24 20:34:52,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:34:52,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-24 20:34:52,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522298406] [2020-09-24 20:34:52,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:34:52,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:34:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:34:53,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:34:53,019 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 21 states. [2020-09-24 20:34:53,589 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:34:53,955 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-09-24 20:34:54,380 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-09-24 20:34:54,780 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-09-24 20:34:55,032 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-09-24 20:34:55,471 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-24 20:34:56,220 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-09-24 20:34:56,688 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 20:34:56,942 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:34:57,295 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-09-24 20:34:57,594 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-24 20:34:57,883 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 20:34:58,267 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-09-24 20:34:58,591 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-09-24 20:34:59,129 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-09-24 20:34:59,308 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 20:34:59,716 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-24 20:35:00,410 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 20:35:00,936 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-09-24 20:35:01,268 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 20:35:01,784 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-09-24 20:35:02,081 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 20:35:03,210 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 20:35:03,882 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 20:35:04,702 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 20:35:05,597 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-24 20:35:06,030 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 20:35:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:35:07,431 INFO L93 Difference]: Finished difference Result 1741 states and 2475 transitions. [2020-09-24 20:35:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 20:35:07,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 167 [2020-09-24 20:35:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:35:07,462 INFO L225 Difference]: With dead ends: 1741 [2020-09-24 20:35:07,462 INFO L226 Difference]: Without dead ends: 1007 [2020-09-24 20:35:07,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1084, Invalid=2948, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 20:35:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-09-24 20:35:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 892. [2020-09-24 20:35:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-24 20:35:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1066 transitions. [2020-09-24 20:35:07,598 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1066 transitions. Word has length 167 [2020-09-24 20:35:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:35:07,599 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1066 transitions. [2020-09-24 20:35:07,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:35:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1066 transitions. [2020-09-24 20:35:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 20:35:07,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:35:07,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:35:07,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:35:07,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:35:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:35:07,626 INFO L82 PathProgramCache]: Analyzing trace with hash 174833264, now seen corresponding path program 1 times [2020-09-24 20:35:07,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:35:07,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405559025] [2020-09-24 20:35:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:35:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:35:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:12,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:35:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 20:35:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:35:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 20:35:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:35:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:35:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:35:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 20:35:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:35:13,354 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-09-24 20:35:13,570 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-09-24 20:35:13,797 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-09-24 20:35:14,057 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-09-24 20:35:14,327 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-09-24 20:35:14,576 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-09-24 20:35:14,805 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-09-24 20:35:15,103 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-09-24 20:35:15,447 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-09-24 20:35:15,792 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-09-24 20:35:16,098 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-09-24 20:35:16,323 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-09-24 20:35:16,542 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-09-24 20:35:16,758 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-09-24 20:35:16,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:35:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:35:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:17,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:35:17,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:35:17,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:35:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 20:35:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:35:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:35:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:35:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:35:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:35:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:35:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:35:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:35:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:35:17,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:35:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:35:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:35:17,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:35:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:35:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:35:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:35:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:35:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:35:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405559025] [2020-09-24 20:35:17,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:35:17,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-24 20:35:17,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436096534] [2020-09-24 20:35:17,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-24 20:35:17,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:35:17,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-24 20:35:17,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:35:17,681 INFO L87 Difference]: Start difference. First operand 892 states and 1066 transitions. Second operand 28 states. [2020-09-24 20:35:18,232 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-09-24 20:35:18,451 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-09-24 20:35:18,759 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2020-09-24 20:35:19,436 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 20:35:19,884 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 20:35:20,272 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-09-24 20:35:20,845 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2020-09-24 20:35:21,256 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-09-24 20:35:21,586 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-09-24 20:35:22,083 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-09-24 20:35:22,404 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-24 20:35:22,826 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2020-09-24 20:35:23,083 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-09-24 20:35:23,380 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-24 20:35:23,683 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-09-24 20:35:23,966 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-09-24 20:35:24,434 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2020-09-24 20:35:24,941 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-09-24 20:35:25,337 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2020-09-24 20:35:25,886 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 20:35:26,137 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-09-24 20:35:26,549 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-09-24 20:35:27,029 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-09-24 20:35:27,350 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-09-24 20:35:27,707 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-09-24 20:35:28,063 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-09-24 20:35:28,445 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 20:35:28,849 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-09-24 20:35:29,257 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 20:35:29,505 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-09-24 20:35:29,810 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-09-24 20:35:30,180 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2020-09-24 20:35:30,568 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2020-09-24 20:35:30,955 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-09-24 20:35:31,423 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2020-09-24 20:35:31,815 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2020-09-24 20:35:32,185 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-09-24 20:35:32,683 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 113 [2020-09-24 20:35:33,350 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-09-24 20:35:33,648 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-09-24 20:35:34,001 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-09-24 20:35:34,622 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2020-09-24 20:35:34,895 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-09-24 20:35:35,245 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-09-24 20:35:35,680 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-09-24 20:35:36,179 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-09-24 20:35:36,499 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-09-24 20:35:36,677 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-24 20:35:37,111 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-09-24 20:35:37,500 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-09-24 20:35:37,793 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-09-24 20:35:38,192 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-09-24 20:35:38,454 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-09-24 20:35:38,866 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99