/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:36,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:36,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:36,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:36,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:36,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:36,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:36,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:36,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:36,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:36,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:36,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:36,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:36,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:36,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:36,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:36,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:36,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:36,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:36,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:36,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:36,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:36,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:36,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:36,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:36,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:36,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:36,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:36,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:36,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:36,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:36,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:36,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:36,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:36,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:36,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:36,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:36,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:36,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:36,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:36,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:36,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:09:36,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:36,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:36,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:36,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:36,500 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:36,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:36,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:36,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:36,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:36,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:36,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:36,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:36,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:36,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:36,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:36,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:36,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:36,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:36,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:36,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:36,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:36,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:36,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:36,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:36,505 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:09:36,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:36,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:36,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:36,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:36,983 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:36,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 10:09:37,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7df99c8/c292d4e5059f4d9e84b09f3bdc1f1282/FLAGb1725bea3 [2020-09-25 10:09:37,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:37,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 10:09:37,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7df99c8/c292d4e5059f4d9e84b09f3bdc1f1282/FLAGb1725bea3 [2020-09-25 10:09:37,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7df99c8/c292d4e5059f4d9e84b09f3bdc1f1282 [2020-09-25 10:09:37,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:37,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:37,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:37,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:37,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:37,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:37" (1/1) ... [2020-09-25 10:09:37,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:37, skipping insertion in model container [2020-09-25 10:09:37,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:37" (1/1) ... [2020-09-25 10:09:38,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:38,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:38,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:38,557 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:38,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:38,804 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:38,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38 WrapperNode [2020-09-25 10:09:38,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:38,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:38,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:38,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:38,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... [2020-09-25 10:09:38,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:38,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:38,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:38,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:38,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:40,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:40,433 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:40,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:40 BoogieIcfgContainer [2020-09-25 10:09:40,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:40,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:40,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:40,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:37" (1/3) ... [2020-09-25 10:09:40,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:40, skipping insertion in model container [2020-09-25 10:09:40,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:38" (2/3) ... [2020-09-25 10:09:40,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:40, skipping insertion in model container [2020-09-25 10:09:40,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:40" (3/3) ... [2020-09-25 10:09:40,454 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-09-25 10:09:40,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:40,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:40,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:40,538 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:40,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:40,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:40,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:40,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:40,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:40,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:40,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 10:09:40,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:40,596 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] [2020-09-25 10:09:40,597 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1568421906, now seen corresponding path program 1 times [2020-09-25 10:09:40,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:40,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 10:09:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 10:09:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:09:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:09:45,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:09:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:09:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:46,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:46,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:09:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:46,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:09:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:46,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 10:09:46,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:46,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:46,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592307967] [2020-09-25 10:09:46,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:46,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:46,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:46,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:46,269 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:48,323 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 10:09:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:48,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 10:09:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:48,351 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 10:09:48,352 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 10:09:48,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 10:09:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 10:09:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 10:09:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 10:09:48,473 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 135 [2020-09-25 10:09:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:48,475 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 10:09:48,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 10:09:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 10:09:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:48,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:48,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:48,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1651782903, now seen corresponding path program 1 times [2020-09-25 10:09:48,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:48,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025927858] [2020-09-25 10:09:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 10:09:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 10:09:53,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 10:09:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:09:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:53,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:53,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:53,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:09:53,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:53,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:09:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:09:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:53,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025927858] [2020-09-25 10:09:53,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:53,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:09:53,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899248256] [2020-09-25 10:09:53,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:09:53,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:53,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:09:53,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:53,799 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 10:09:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:55,652 INFO L93 Difference]: Finished difference Result 1520 states and 1942 transitions. [2020-09-25 10:09:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:09:55,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 10:09:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:55,660 INFO L225 Difference]: With dead ends: 1520 [2020-09-25 10:09:55,660 INFO L226 Difference]: Without dead ends: 927 [2020-09-25 10:09:55,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:09:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-09-25 10:09:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 765. [2020-09-25 10:09:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-09-25 10:09:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 920 transitions. [2020-09-25 10:09:55,711 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 920 transitions. Word has length 169 [2020-09-25 10:09:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:55,711 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 920 transitions. [2020-09-25 10:09:55,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:09:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 920 transitions. [2020-09-25 10:09:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 10:09:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:55,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:55,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:55,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash 516365175, now seen corresponding path program 1 times [2020-09-25 10:09:55,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:55,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786449412] [2020-09-25 10:09:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:55,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:00,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 10:10:00,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:10:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:00,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:10:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:10:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:10:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:01,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:01,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:10:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 10:10:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:01,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:10:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:02,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786449412] [2020-09-25 10:10:02,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:02,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:10:02,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455222280] [2020-09-25 10:10:02,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:10:02,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:02,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:10:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:10:02,424 INFO L87 Difference]: Start difference. First operand 765 states and 920 transitions. Second operand 17 states. [2020-09-25 10:10:04,780 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 10:10:05,104 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-25 10:10:06,925 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-09-25 10:10:07,331 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-09-25 10:10:07,828 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-25 10:10:08,019 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-09-25 10:10:08,435 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-25 10:10:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:09,107 INFO L93 Difference]: Finished difference Result 2425 states and 3108 transitions. [2020-09-25 10:10:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:10:09,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-09-25 10:10:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:09,121 INFO L225 Difference]: With dead ends: 2425 [2020-09-25 10:10:09,122 INFO L226 Difference]: Without dead ends: 1296 [2020-09-25 10:10:09,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:10:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2020-09-25 10:10:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1251. [2020-09-25 10:10:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-09-25 10:10:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1508 transitions. [2020-09-25 10:10:09,175 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1508 transitions. Word has length 170 [2020-09-25 10:10:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:09,175 INFO L479 AbstractCegarLoop]: Abstraction has 1251 states and 1508 transitions. [2020-09-25 10:10:09,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:10:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1508 transitions. [2020-09-25 10:10:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 10:10:09,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:09,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:10:09,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:09,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash 296029146, now seen corresponding path program 1 times [2020-09-25 10:10:09,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:09,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489599708] [2020-09-25 10:10:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 10:10:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:10:14,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:14,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 10:10:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:10:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:14,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:14,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:14,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:10:14,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:14,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:14,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:14,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:10:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 10:10:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:14,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:10:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 10:10:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 10:10:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:10:14,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489599708] [2020-09-25 10:10:14,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:14,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:10:14,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357855684] [2020-09-25 10:10:14,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:10:14,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:14,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:10:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:14,680 INFO L87 Difference]: Start difference. First operand 1251 states and 1508 transitions. Second operand 7 states. [2020-09-25 10:10:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:17,596 INFO L93 Difference]: Finished difference Result 3418 states and 4330 transitions. [2020-09-25 10:10:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:10:17,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-09-25 10:10:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:17,613 INFO L225 Difference]: With dead ends: 3418 [2020-09-25 10:10:17,613 INFO L226 Difference]: Without dead ends: 1788 [2020-09-25 10:10:17,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-09-25 10:10:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1684. [2020-09-25 10:10:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-09-25 10:10:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 1946 transitions. [2020-09-25 10:10:17,702 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 1946 transitions. Word has length 238 [2020-09-25 10:10:17,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:17,703 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 1946 transitions. [2020-09-25 10:10:17,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:10:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 1946 transitions. [2020-09-25 10:10:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 10:10:17,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:17,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:17,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:17,718 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1860720897, now seen corresponding path program 1 times [2020-09-25 10:10:17,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:17,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802203956] [2020-09-25 10:10:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 10:10:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:10:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 10:10:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:23,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 10:10:23,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:10:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:23,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:10:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 10:10:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:10:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 10:10:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:23,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:10:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 10:10:23,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802203956] [2020-09-25 10:10:23,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:23,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:10:23,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276417933] [2020-09-25 10:10:23,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:10:23,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:23,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:10:23,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:10:23,731 INFO L87 Difference]: Start difference. First operand 1684 states and 1946 transitions. Second operand 10 states. [2020-09-25 10:10:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:26,778 INFO L93 Difference]: Finished difference Result 3834 states and 4474 transitions. [2020-09-25 10:10:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:26,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 250 [2020-09-25 10:10:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:26,780 INFO L225 Difference]: With dead ends: 3834 [2020-09-25 10:10:26,780 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:10:26,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:10:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:10:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:10:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:10:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:10:26,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 250 [2020-09-25 10:10:26,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:26,790 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:10:26,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:10:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:10:26,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:10:26,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:10:26,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:10:27,619 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 25 [2020-09-25 10:10:27,733 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 25