/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=LOWLEXORDER --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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:41:44,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:41:44,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:41:44,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:41:44,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:41:44,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:41:44,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:41:44,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:41:44,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:41:44,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:41:44,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:41:44,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:41:44,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:41:44,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:41:44,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:41:44,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:41:44,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:41:44,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:41:44,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:41:44,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:41:44,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:41:44,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:41:44,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:41:44,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:41:44,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:41:44,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:41:44,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:41:44,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:41:44,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:41:44,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:41:44,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:41:44,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:41:44,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:41:44,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:41:44,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:41:44,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:41:44,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:41:44,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:41:44,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:41:44,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:41:44,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:41:44,364 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 21:41:44,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:41:44,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:41:44,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:41:44,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:41:44,402 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:41:44,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:41:44,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:41:44,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:41:44,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:41:44,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:41:44,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:41:44,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:41:44,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:41:44,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:41:44,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:41:44,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:41:44,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:41:44,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:41:44,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:41:44,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:41:44,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:41:44,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:41:44,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:41:44,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:41:44,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:41:44,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:41:44,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:41:44,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:41:44,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:41:44,407 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:41:44,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:41:44,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:41:44,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:41:44,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:41:44,920 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:41:44,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label16.c [2020-09-24 21:41:45,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fe459cf9/1d970cbc67ed4479b546592b6da69ec9/FLAG8058aa669 [2020-09-24 21:41:45,668 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:41:45,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label16.c [2020-09-24 21:41:45,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fe459cf9/1d970cbc67ed4479b546592b6da69ec9/FLAG8058aa669 [2020-09-24 21:41:45,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fe459cf9/1d970cbc67ed4479b546592b6da69ec9 [2020-09-24 21:41:45,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:41:45,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:41:45,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:45,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:41:45,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:41:45,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:45" (1/1) ... [2020-09-24 21:41:45,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:45, skipping insertion in model container [2020-09-24 21:41:45,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:45" (1/1) ... [2020-09-24 21:41:45,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:41:46,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:41:46,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:46,546 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:41:46,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:46,769 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:41:46,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46 WrapperNode [2020-09-24 21:41:46,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:46,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:41:46,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:41:46,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:41:46,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:41:46,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:41:46,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:41:46,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:41:46,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (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 21:41:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:41:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:41:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:41:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:41:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:41:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:41:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:41:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:41:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:41:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:41:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:41:48,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:41:48,281 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:41:48,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:48 BoogieIcfgContainer [2020-09-24 21:41:48,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:41:48,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:41:48,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:41:48,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:41:48,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:41:45" (1/3) ... [2020-09-24 21:41:48,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5510976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:48, skipping insertion in model container [2020-09-24 21:41:48,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46" (2/3) ... [2020-09-24 21:41:48,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5510976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:48, skipping insertion in model container [2020-09-24 21:41:48,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:48" (3/3) ... [2020-09-24 21:41:48,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label16.c [2020-09-24 21:41:48,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:41:48,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:41:48,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:41:48,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:41:48,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:41:48,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:41:48,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:41:48,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:41:48,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:41:48,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:41:48,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:41:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:41:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 21:41:48,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:48,453 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] [2020-09-24 21:41:48,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1797304346, now seen corresponding path program 1 times [2020-09-24 21:41:48,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:48,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136863733] [2020-09-24 21:41:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 21:41:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:41:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:41:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:41:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:41:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:41:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:41:54,526 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-24 21:41:54,732 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-09-24 21:41:54,943 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-09-24 21:41:55,145 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2020-09-24 21:41:55,307 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-09-24 21:41:55,451 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 28 [2020-09-24 21:41:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:55,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:55,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 21:41:55,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:56,136 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 21:41:56,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136863733] [2020-09-24 21:41:56,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:41:56,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 21:41:56,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833027098] [2020-09-24 21:41:56,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:41:56,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:56,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:41:56,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:41:56,183 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 17 states. [2020-09-24 21:41:56,890 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-09-24 21:41:57,116 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 21:41:57,421 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 21:41:57,775 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2020-09-24 21:41:58,143 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2020-09-24 21:41:58,729 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 21:41:59,122 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-09-24 21:41:59,704 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-09-24 21:42:01,196 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 88 [2020-09-24 21:42:01,471 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-09-24 21:42:01,895 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:42:02,845 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2020-09-24 21:42:03,399 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2020-09-24 21:42:03,698 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 21:42:04,919 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:05,479 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:42:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:08,615 INFO L93 Difference]: Finished difference Result 1870 states and 2662 transitions. [2020-09-24 21:42:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:08,618 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2020-09-24 21:42:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:08,647 INFO L225 Difference]: With dead ends: 1870 [2020-09-24 21:42:08,647 INFO L226 Difference]: Without dead ends: 1241 [2020-09-24 21:42:08,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 21:42:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-09-24 21:42:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1076. [2020-09-24 21:42:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions. [2020-09-24 21:42:08,797 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 113 [2020-09-24 21:42:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:08,798 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions. [2020-09-24 21:42:08,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:42:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions. [2020-09-24 21:42:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 21:42:08,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:08,819 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] [2020-09-24 21:42:08,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:08,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1218247288, now seen corresponding path program 1 times [2020-09-24 21:42:08,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:08,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190026754] [2020-09-24 21:42:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:13,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 21:42:13,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:13,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:42:13,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:14,523 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-09-24 21:42:14,672 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-09-24 21:42:14,809 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-09-24 21:42:15,053 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2020-09-24 21:42:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:15,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:15,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:42:15,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:42:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:15,799 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 21:42:15,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190026754] [2020-09-24 21:42:15,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:15,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:15,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887546401] [2020-09-24 21:42:15,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:15,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:15,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:15,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:15,804 INFO L87 Difference]: Start difference. First operand 1076 states and 1294 transitions. Second operand 19 states. [2020-09-24 21:42:16,801 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 21:42:17,416 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-09-24 21:42:17,758 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-09-24 21:42:19,174 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 21:42:19,591 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-09-24 21:42:19,954 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2020-09-24 21:42:20,942 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-09-24 21:42:21,783 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-09-24 21:42:22,332 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2020-09-24 21:42:24,181 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-09-24 21:42:25,168 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-09-24 21:42:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:27,505 INFO L93 Difference]: Finished difference Result 4103 states and 5490 transitions. [2020-09-24 21:42:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 21:42:27,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 135 [2020-09-24 21:42:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:27,530 INFO L225 Difference]: With dead ends: 4103 [2020-09-24 21:42:27,530 INFO L226 Difference]: Without dead ends: 3107 [2020-09-24 21:42:27,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=593, Invalid=1477, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:42:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2020-09-24 21:42:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3029. [2020-09-24 21:42:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3029 states. [2020-09-24 21:42:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3673 transitions. [2020-09-24 21:42:27,678 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3673 transitions. Word has length 135 [2020-09-24 21:42:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:27,680 INFO L479 AbstractCegarLoop]: Abstraction has 3029 states and 3673 transitions. [2020-09-24 21:42:27,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:42:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3673 transitions. [2020-09-24 21:42:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:42:27,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:27,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:42:27,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:27,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1653074413, now seen corresponding path program 1 times [2020-09-24 21:42:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:27,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223906254] [2020-09-24 21:42:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:32,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:42:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:42:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:42:32,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:42:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:42:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:42:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:42:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:33,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:33,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:42:33,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:42:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:42:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:42:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:42:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:42:33,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223906254] [2020-09-24 21:42:33,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:33,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:42:33,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462365623] [2020-09-24 21:42:33,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:42:33,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:42:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:42:33,703 INFO L87 Difference]: Start difference. First operand 3029 states and 3673 transitions. Second operand 12 states. [2020-09-24 21:42:34,492 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-24 21:42:34,729 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 21:42:35,233 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 21:42:35,392 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-24 21:42:37,425 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65