/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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:12,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:12,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:12,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:12,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:12,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:12,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:12,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:12,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:12,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:12,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:12,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:12,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:12,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:12,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:12,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:12,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:12,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:12,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:12,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:12,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:12,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:12,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:12,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:12,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:12,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:12,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:12,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:12,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:12,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:12,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:12,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:12,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:12,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:12,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:12,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:12,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:12,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:12,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:12,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:12,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:12,485 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 14:43:12,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:12,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:12,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:12,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:12,540 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:12,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:12,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:12,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:12,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:12,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:12,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:12,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:12,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:12,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:12,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:12,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:12,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:12,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:12,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:12,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:12,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:12,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:12,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:12,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:12,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:12,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:12,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:12,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:12,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:12,547 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 14:43:13,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:13,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:13,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:13,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:13,036 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:13,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 14:43:13,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f07b840/42bb110f57fd4c5f9b0f5d6660f2833a/FLAG7dfd79ff2 [2020-09-25 14:43:13,763 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:13,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 14:43:13,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f07b840/42bb110f57fd4c5f9b0f5d6660f2833a/FLAG7dfd79ff2 [2020-09-25 14:43:13,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f07b840/42bb110f57fd4c5f9b0f5d6660f2833a [2020-09-25 14:43:13,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:13,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:13,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:13,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:13,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:13,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:13" (1/1) ... [2020-09-25 14:43:14,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:13, skipping insertion in model container [2020-09-25 14:43:14,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:13" (1/1) ... [2020-09-25 14:43:14,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:14,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:14,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:14,851 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:15,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:15,040 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:15,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15 WrapperNode [2020-09-25 14:43:15,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:15,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:15,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:15,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:15,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:15,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:15,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:15,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:15,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (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 14:43:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:17,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:17,849 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:17,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:17 BoogieIcfgContainer [2020-09-25 14:43:17,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:17,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:17,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:17,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:13" (1/3) ... [2020-09-25 14:43:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98da5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:17, skipping insertion in model container [2020-09-25 14:43:17,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15" (2/3) ... [2020-09-25 14:43:17,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98da5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:17, skipping insertion in model container [2020-09-25 14:43:17,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:17" (3/3) ... [2020-09-25 14:43:17,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 14:43:17,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:17,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:17,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:18,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:18,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:18,015 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:18,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:18,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:18,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:18,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:18,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 14:43:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 14:43:18,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:18,085 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] [2020-09-25 14:43:18,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 14:43:18,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:18,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654495041] [2020-09-25 14:43:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:43:19,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-25 14:43:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:19,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:43:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:19,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:19,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:19,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:43:19,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:19,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:19,417 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 14:43:19,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654495041] [2020-09-25 14:43:19,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:19,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:19,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700216019] [2020-09-25 14:43:19,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:19,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:19,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:19,453 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 14:43:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:23,506 INFO L93 Difference]: Finished difference Result 1957 states and 2552 transitions. [2020-09-25 14:43:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:23,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 14:43:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:23,537 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 14:43:23,537 INFO L226 Difference]: Without dead ends: 1087 [2020-09-25 14:43:23,549 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 14:43:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-25 14:43:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2020-09-25 14:43:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 14:43:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1227 transitions. [2020-09-25 14:43:23,674 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1227 transitions. Word has length 34 [2020-09-25 14:43:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:23,674 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1227 transitions. [2020-09-25 14:43:23,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1227 transitions. [2020-09-25 14:43:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 14:43:23,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:23,687 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:23,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:23,688 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 14:43:23,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:23,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138523937] [2020-09-25 14:43:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 14:43:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2957 [2020-09-25 14:43:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:43:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:26,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:43:26,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:43:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:43:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 14:43:27,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:27,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:43:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:27,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138523937] [2020-09-25 14:43:27,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:27,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:27,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554827124] [2020-09-25 14:43:27,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:27,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:27,175 INFO L87 Difference]: Start difference. First operand 1039 states and 1227 transitions. Second operand 7 states. [2020-09-25 14:43:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:31,904 INFO L93 Difference]: Finished difference Result 2751 states and 3333 transitions. [2020-09-25 14:43:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:31,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 14:43:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:31,915 INFO L225 Difference]: With dead ends: 2751 [2020-09-25 14:43:31,916 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 14:43:31,920 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 14:43:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 14:43:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1444. [2020-09-25 14:43:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-25 14:43:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1752 transitions. [2020-09-25 14:43:31,988 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1752 transitions. Word has length 116 [2020-09-25 14:43:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:31,991 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1752 transitions. [2020-09-25 14:43:31,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1752 transitions. [2020-09-25 14:43:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 14:43:32,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:32,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:32,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:32,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 14:43:32,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:32,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583699988] [2020-09-25 14:43:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 14:43:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:43:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:43:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 14:43:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:43:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:43:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:43:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 14:43:37,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:43:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:37,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583699988] [2020-09-25 14:43:37,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:37,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:37,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710257711] [2020-09-25 14:43:37,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:37,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:37,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:37,496 INFO L87 Difference]: Start difference. First operand 1444 states and 1752 transitions. Second operand 7 states. [2020-09-25 14:43:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:41,896 INFO L93 Difference]: Finished difference Result 3573 states and 4382 transitions. [2020-09-25 14:43:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:41,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-09-25 14:43:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:41,911 INFO L225 Difference]: With dead ends: 3573 [2020-09-25 14:43:41,912 INFO L226 Difference]: Without dead ends: 2146 [2020-09-25 14:43:41,918 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 14:43:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-09-25 14:43:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1902. [2020-09-25 14:43:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-09-25 14:43:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2322 transitions. [2020-09-25 14:43:42,008 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2322 transitions. Word has length 119 [2020-09-25 14:43:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:42,011 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2322 transitions. [2020-09-25 14:43:42,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2322 transitions. [2020-09-25 14:43:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 14:43:42,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:42,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:42,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:42,016 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:42,017 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-25 14:43:42,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:42,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038760387] [2020-09-25 14:43:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:45,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3838 [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:43:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:45,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:45,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:45,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:43:45,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:45,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:46,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:46,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 14:43:46,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:46,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:46,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038760387] [2020-09-25 14:43:46,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:46,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:46,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109644229] [2020-09-25 14:43:46,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:46,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:46,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:46,247 INFO L87 Difference]: Start difference. First operand 1902 states and 2322 transitions. Second operand 7 states. [2020-09-25 14:43:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:49,300 INFO L93 Difference]: Finished difference Result 4264 states and 5251 transitions. [2020-09-25 14:43:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:49,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 14:43:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:49,317 INFO L225 Difference]: With dead ends: 4264 [2020-09-25 14:43:49,317 INFO L226 Difference]: Without dead ends: 2379 [2020-09-25 14:43:49,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2020-09-25 14:43:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2324. [2020-09-25 14:43:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2324 states. [2020-09-25 14:43:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 2813 transitions. [2020-09-25 14:43:49,391 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 2813 transitions. Word has length 123 [2020-09-25 14:43:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:49,391 INFO L479 AbstractCegarLoop]: Abstraction has 2324 states and 2813 transitions. [2020-09-25 14:43:49,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 2813 transitions. [2020-09-25 14:43:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 14:43:49,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:49,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:49,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:49,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 14:43:49,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:49,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149554905] [2020-09-25 14:43:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 14:43:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:51,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:51,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:51,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:51,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:51,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:51,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 14:43:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 14:43:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:43:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:52,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149554905] [2020-09-25 14:43:52,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:52,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:52,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526511493] [2020-09-25 14:43:52,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:52,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:52,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:52,171 INFO L87 Difference]: Start difference. First operand 2324 states and 2813 transitions. Second operand 8 states. [2020-09-25 14:43:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:58,490 INFO L93 Difference]: Finished difference Result 5854 states and 7299 transitions. [2020-09-25 14:43:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:43:58,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 14:43:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:58,512 INFO L225 Difference]: With dead ends: 5854 [2020-09-25 14:43:58,512 INFO L226 Difference]: Without dead ends: 3941 [2020-09-25 14:43:58,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:43:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2020-09-25 14:43:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3746. [2020-09-25 14:43:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-09-25 14:43:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 4530 transitions. [2020-09-25 14:43:58,641 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 4530 transitions. Word has length 175 [2020-09-25 14:43:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:58,642 INFO L479 AbstractCegarLoop]: Abstraction has 3746 states and 4530 transitions. [2020-09-25 14:43:58,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 4530 transitions. [2020-09-25 14:43:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 14:43:58,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:58,647 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 14:43:58,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:58,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash -485643698, now seen corresponding path program 1 times [2020-09-25 14:43:58,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:58,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818873984] [2020-09-25 14:43:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:58,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking...