/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=0.5 --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/Problem10_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:08,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:08,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:08,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:08,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:08,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:08,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:08,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:08,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:08,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:08,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:08,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:08,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:08,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:08,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:08,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:08,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:08,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:08,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:08,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:08,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:08,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:08,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:08,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:08,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:08,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:08,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:08,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:08,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:08,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:08,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:08,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:08,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:08,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:08,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:08,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:08,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:08,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:08,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:08,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:08,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:08,825 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 14:42:08,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:08,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:08,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:08,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:08,880 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:08,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:08,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:08,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:08,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:08,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:08,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:08,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:08,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:08,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:08,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:08,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:08,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:08,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:08,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:08,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:08,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:08,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:08,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:08,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:08,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:08,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:08,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:08,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:08,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:08,887 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:09,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:09,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:09,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:09,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:09,396 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:09,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 14:42:09,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcea07379/9a0ec006400a4185979d7d27b50ed3ed/FLAG176aa53c1 [2020-09-25 14:42:10,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:10,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 14:42:10,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcea07379/9a0ec006400a4185979d7d27b50ed3ed/FLAG176aa53c1 [2020-09-25 14:42:10,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcea07379/9a0ec006400a4185979d7d27b50ed3ed [2020-09-25 14:42:10,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:10,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:10,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:10,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:10,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:10,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:10" (1/1) ... [2020-09-25 14:42:10,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:10, skipping insertion in model container [2020-09-25 14:42:10,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:10" (1/1) ... [2020-09-25 14:42:10,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:10,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:10,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:10,990 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:11,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:11,249 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:11,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11 WrapperNode [2020-09-25 14:42:11,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:11,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:11,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:11,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:11,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (1/1) ... [2020-09-25 14:42:11,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:11,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:11,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:11,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:11,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (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 14:42:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:12,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:12,965 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:12,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:12 BoogieIcfgContainer [2020-09-25 14:42:12,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:12,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:12,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:12,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:12,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:10" (1/3) ... [2020-09-25 14:42:12,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:12, skipping insertion in model container [2020-09-25 14:42:12,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:11" (2/3) ... [2020-09-25 14:42:12,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:12, skipping insertion in model container [2020-09-25 14:42:12,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:12" (3/3) ... [2020-09-25 14:42:12,984 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-09-25 14:42:12,996 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:13,008 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:13,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:13,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:13,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:13,067 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:13,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:13,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:13,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:13,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:13,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 14:42:13,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:13,112 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] [2020-09-25 14:42:13,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:13,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1927363665, now seen corresponding path program 1 times [2020-09-25 14:42:13,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:13,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 14:42:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:14,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:42:14,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-09-25 14:42:14,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:14,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:42:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:42:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:42:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:14,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:14,217 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 14:42:14,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 14:42:14,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:14,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:14,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196654398] [2020-09-25 14:42:14,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:14,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:14,252 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:16,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:16,167 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:42:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:16,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 14:42:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:16,197 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:42:16,198 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:42:16,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:42:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:42:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:42:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:42:16,334 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 44 [2020-09-25 14:42:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:16,335 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:42:16,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:42:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 14:42:16,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:16,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:16,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:16,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:16,344 INFO L82 PathProgramCache]: Analyzing trace with hash -739682472, now seen corresponding path program 1 times [2020-09-25 14:42:16,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:16,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616217826] [2020-09-25 14:42:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 14:42:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-09-25 14:42:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:42:18,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:18,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 14:42:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:18,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616217826] [2020-09-25 14:42:18,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:18,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:18,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704109878] [2020-09-25 14:42:18,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:18,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:18,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:18,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:18,951 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:42:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:21,360 INFO L93 Difference]: Finished difference Result 1451 states and 1877 transitions. [2020-09-25 14:42:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:21,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-09-25 14:42:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:21,374 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 14:42:21,374 INFO L226 Difference]: Without dead ends: 923 [2020-09-25 14:42:21,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-09-25 14:42:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 861. [2020-09-25 14:42:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-25 14:42:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1031 transitions. [2020-09-25 14:42:21,464 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1031 transitions. Word has length 124 [2020-09-25 14:42:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:21,465 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1031 transitions. [2020-09-25 14:42:21,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1031 transitions. [2020-09-25 14:42:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:42:21,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:21,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:21,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:21,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1991578147, now seen corresponding path program 1 times [2020-09-25 14:42:21,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:21,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385133656] [2020-09-25 14:42:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:42:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4429 [2020-09-25 14:42:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 14:42:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:42:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:26,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:42:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:26,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:26,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385133656] [2020-09-25 14:42:26,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:26,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:26,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996725488] [2020-09-25 14:42:26,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:26,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:26,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:26,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:26,458 INFO L87 Difference]: Start difference. First operand 861 states and 1031 transitions. Second operand 8 states. [2020-09-25 14:42:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:29,722 INFO L93 Difference]: Finished difference Result 2399 states and 2940 transitions. [2020-09-25 14:42:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:29,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 14:42:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:29,734 INFO L225 Difference]: With dead ends: 2399 [2020-09-25 14:42:29,734 INFO L226 Difference]: Without dead ends: 1553 [2020-09-25 14:42:29,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2020-09-25 14:42:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1508. [2020-09-25 14:42:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1508 states. [2020-09-25 14:42:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1773 transitions. [2020-09-25 14:42:29,808 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1773 transitions. Word has length 133 [2020-09-25 14:42:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:29,810 INFO L479 AbstractCegarLoop]: Abstraction has 1508 states and 1773 transitions. [2020-09-25 14:42:29,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1773 transitions. [2020-09-25 14:42:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 14:42:29,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:29,825 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, 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, 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] [2020-09-25 14:42:29,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:29,826 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash -718653912, now seen corresponding path program 1 times [2020-09-25 14:42:29,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:29,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693414026] [2020-09-25 14:42:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 14:42:33,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3942 [2020-09-25 14:42:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:42:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:42:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:33,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:33,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:33,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:42:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:34,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:34,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 14:42:34,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:34,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:34,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693414026] [2020-09-25 14:42:34,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:34,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:34,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230363469] [2020-09-25 14:42:34,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:34,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:34,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:34,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:34,263 INFO L87 Difference]: Start difference. First operand 1508 states and 1773 transitions. Second operand 7 states. [2020-09-25 14:42:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:37,297 INFO L93 Difference]: Finished difference Result 3766 states and 4864 transitions. [2020-09-25 14:42:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:37,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 14:42:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:37,312 INFO L225 Difference]: With dead ends: 3766 [2020-09-25 14:42:37,313 INFO L226 Difference]: Without dead ends: 2438 [2020-09-25 14:42:37,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2020-09-25 14:42:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2416. [2020-09-25 14:42:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-09-25 14:42:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3055 transitions. [2020-09-25 14:42:37,413 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3055 transitions. Word has length 203 [2020-09-25 14:42:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:37,415 INFO L479 AbstractCegarLoop]: Abstraction has 2416 states and 3055 transitions. [2020-09-25 14:42:37,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3055 transitions. [2020-09-25 14:42:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-25 14:42:37,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:37,429 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:37,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:37,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 355866237, now seen corresponding path program 1 times [2020-09-25 14:42:37,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:37,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195072699] [2020-09-25 14:42:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-09-25 14:42:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:42:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:42,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 14:42:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:42:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:42:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:42,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 14:42:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:42,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:42:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:42,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:42:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-25 14:42:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:42:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 14:42:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:42:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 14:42:43,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195072699] [2020-09-25 14:42:43,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:43,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:43,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577365756] [2020-09-25 14:42:43,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:43,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:43,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:43,614 INFO L87 Difference]: Start difference. First operand 2416 states and 3055 transitions. Second operand 7 states. [2020-09-25 14:42:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:46,303 INFO L93 Difference]: Finished difference Result 4707 states and 6140 transitions. [2020-09-25 14:42:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:46,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-09-25 14:42:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:46,321 INFO L225 Difference]: With dead ends: 4707 [2020-09-25 14:42:46,321 INFO L226 Difference]: Without dead ends: 2931 [2020-09-25 14:42:46,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-09-25 14:42:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2898. [2020-09-25 14:42:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2020-09-25 14:42:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3667 transitions. [2020-09-25 14:42:46,412 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3667 transitions. Word has length 338 [2020-09-25 14:42:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:46,412 INFO L479 AbstractCegarLoop]: Abstraction has 2898 states and 3667 transitions. [2020-09-25 14:42:46,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3667 transitions. [2020-09-25 14:42:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-09-25 14:42:46,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:46,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:46,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:46,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:46,427 INFO L82 PathProgramCache]: Analyzing trace with hash -52877573, now seen corresponding path program 1 times [2020-09-25 14:42:46,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:46,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560480118] [2020-09-25 14:42:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-09-25 14:42:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:42:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:51,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-09-25 14:42:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:51,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:51,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:51,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:51,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:51,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:42:51,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:51,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:42:52,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 14:42:52,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 14:42:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:42:52,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-25 14:42:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:42:52,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-09-25 14:42:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:42:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-09-25 14:42:53,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560480118] [2020-09-25 14:42:53,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:53,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:53,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659455575] [2020-09-25 14:42:53,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:53,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:53,009 INFO L87 Difference]: Start difference. First operand 2898 states and 3667 transitions. Second operand 8 states.