/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=0.3 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:28:12,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:28:12,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:28:12,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:28:12,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:28:12,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:28:12,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:28:12,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:28:12,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:28:12,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:28:12,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:28:12,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:28:12,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:28:12,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:28:12,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:28:12,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:28:12,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:28:12,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:28:12,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:28:12,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:28:12,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:28:12,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:28:12,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:28:12,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:28:12,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:28:12,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:28:12,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:28:12,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:28:12,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:28:12,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:28:12,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:28:12,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:28:12,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:28:12,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:28:12,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:28:12,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:28:12,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:28:12,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:28:12,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:28:12,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:28:12,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:28:12,942 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 12:28:12,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:28:12,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:28:12,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:28:12,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:28:12,988 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:28:12,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:28:12,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:28:12,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:28:12,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:28:12,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:28:12,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:28:12,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:28:12,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:28:12,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:28:12,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:28:12,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:28:12,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:28:12,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:28:12,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:28:12,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:28:12,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:28:12,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:28:12,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:28:12,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:28:12,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:28:12,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:28:12,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:28:12,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:28:12,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:28:12,994 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:28:13,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:28:13,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:28:13,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:28:13,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:28:13,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:28:13,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 12:28:13,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41fad7abb/5f79dec950294f2ea032595f6a451292/FLAG9f7fffab9 [2020-09-25 12:28:14,265 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:28:14,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 12:28:14,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41fad7abb/5f79dec950294f2ea032595f6a451292/FLAG9f7fffab9 [2020-09-25 12:28:14,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41fad7abb/5f79dec950294f2ea032595f6a451292 [2020-09-25 12:28:14,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:28:14,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:28:14,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:14,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:28:14,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:28:14,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:14" (1/1) ... [2020-09-25 12:28:14,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:14, skipping insertion in model container [2020-09-25 12:28:14,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:14" (1/1) ... [2020-09-25 12:28:14,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:28:14,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:28:15,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:15,197 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:28:15,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:15,330 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:28:15,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15 WrapperNode [2020-09-25 12:28:15,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:15,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:28:15,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:28:15,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:28:15,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (1/1) ... [2020-09-25 12:28:15,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:28:15,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:28:15,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:28:15,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:28:15,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (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 12:28:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:28:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:28:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:28:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:17,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:17,202 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:17,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:17 BoogieIcfgContainer [2020-09-25 12:28:17,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:17,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:17,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:17,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:17,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:28:14" (1/3) ... [2020-09-25 12:28:17,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6217c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:17, skipping insertion in model container [2020-09-25 12:28:17,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:15" (2/3) ... [2020-09-25 12:28:17,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6217c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:17, skipping insertion in model container [2020-09-25 12:28:17,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:17" (3/3) ... [2020-09-25 12:28:17,225 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 12:28:17,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:17,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:17,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:17,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:17,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:17,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:17,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:17,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:17,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:17,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:17,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:28:17,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:17,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:17,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 12:28:17,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:17,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697536871] [2020-09-25 12:28:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:28:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-25 12:28:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:28:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:18,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,324 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 12:28:18,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697536871] [2020-09-25 12:28:18,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:18,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:28:18,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064180777] [2020-09-25 12:28:18,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:28:18,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:18,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:28:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:28:18,356 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 12:28:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:20,991 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 12:28:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:20,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 12:28:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:21,022 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 12:28:21,022 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 12:28:21,033 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 12:28:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 12:28:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 12:28:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 12:28:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 12:28:21,139 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 60 [2020-09-25 12:28:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:21,140 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 12:28:21,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 12:28:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 12:28:21,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:21,148 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, 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] [2020-09-25 12:28:21,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:21,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:21,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1537556143, now seen corresponding path program 1 times [2020-09-25 12:28:21,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:21,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157684375] [2020-09-25 12:28:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 12:28:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-09-25 12:28:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:28:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 12:28:25,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:28:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:25,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157684375] [2020-09-25 12:28:25,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:25,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:25,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192658930] [2020-09-25 12:28:25,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:25,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:25,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:25,766 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 12:28:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:31,687 INFO L93 Difference]: Finished difference Result 2931 states and 3862 transitions. [2020-09-25 12:28:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:28:31,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-25 12:28:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:31,703 INFO L225 Difference]: With dead ends: 2931 [2020-09-25 12:28:31,703 INFO L226 Difference]: Without dead ends: 2140 [2020-09-25 12:28:31,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2020-09-25 12:28:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2082. [2020-09-25 12:28:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-09-25 12:28:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2499 transitions. [2020-09-25 12:28:31,795 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2499 transitions. Word has length 139 [2020-09-25 12:28:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:31,798 INFO L479 AbstractCegarLoop]: Abstraction has 2082 states and 2499 transitions. [2020-09-25 12:28:31,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2499 transitions. [2020-09-25 12:28:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 12:28:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:31,812 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, 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] [2020-09-25 12:28:31,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:31,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:31,813 INFO L82 PathProgramCache]: Analyzing trace with hash 307088959, now seen corresponding path program 1 times [2020-09-25 12:28:31,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:31,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645019195] [2020-09-25 12:28:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:36,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 12:28:36,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:28:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:36,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 12:28:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:37,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:37,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 12:28:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:28:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:37,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645019195] [2020-09-25 12:28:37,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:37,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187400992] [2020-09-25 12:28:37,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:37,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:37,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:37,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:37,324 INFO L87 Difference]: Start difference. First operand 2082 states and 2499 transitions. Second operand 8 states. [2020-09-25 12:28:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:41,761 INFO L93 Difference]: Finished difference Result 5178 states and 6492 transitions. [2020-09-25 12:28:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:41,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 12:28:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:41,781 INFO L225 Difference]: With dead ends: 5178 [2020-09-25 12:28:41,781 INFO L226 Difference]: Without dead ends: 3542 [2020-09-25 12:28:41,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2020-09-25 12:28:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 2125. [2020-09-25 12:28:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2125 states. [2020-09-25 12:28:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 2558 transitions. [2020-09-25 12:28:41,872 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 2558 transitions. Word has length 143 [2020-09-25 12:28:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:41,873 INFO L479 AbstractCegarLoop]: Abstraction has 2125 states and 2558 transitions. [2020-09-25 12:28:41,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 2558 transitions. [2020-09-25 12:28:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 12:28:41,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:41,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:41,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:41,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash -851647883, now seen corresponding path program 1 times [2020-09-25 12:28:41,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:41,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839387710] [2020-09-25 12:28:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:46,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 12:28:46,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:28:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:28:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:46,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:28:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 12:28:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:47,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:47,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:47,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:47,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 12:28:47,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:28:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:47,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:28:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 12:28:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:47,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:28:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:47,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839387710] [2020-09-25 12:28:47,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:47,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:47,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991476513] [2020-09-25 12:28:47,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:47,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:47,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:47,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:47,642 INFO L87 Difference]: Start difference. First operand 2125 states and 2558 transitions. Second operand 8 states. [2020-09-25 12:28:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:51,843 INFO L93 Difference]: Finished difference Result 5128 states and 6360 transitions. [2020-09-25 12:28:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:28:51,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-09-25 12:28:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:51,858 INFO L225 Difference]: With dead ends: 5128 [2020-09-25 12:28:51,858 INFO L226 Difference]: Without dead ends: 3018 [2020-09-25 12:28:51,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:28:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-09-25 12:28:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2653. [2020-09-25 12:28:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2020-09-25 12:28:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 3172 transitions. [2020-09-25 12:28:51,929 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 3172 transitions. Word has length 237 [2020-09-25 12:28:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:51,930 INFO L479 AbstractCegarLoop]: Abstraction has 2653 states and 3172 transitions. [2020-09-25 12:28:51,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 3172 transitions. [2020-09-25 12:28:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 12:28:51,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:51,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:51,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:51,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1496168194, now seen corresponding path program 1 times [2020-09-25 12:28:51,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:51,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666697038] [2020-09-25 12:28:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 12:28:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 12:28:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:28:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:57,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:57,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:57,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 12:28:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 12:28:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:28:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:57,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 12:28:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:28:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 12:28:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 12:28:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 88 proven. 67 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:28:57,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666697038] [2020-09-25 12:28:57,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:57,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:28:57,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077500676] [2020-09-25 12:28:57,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:57,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:57,734 INFO L87 Difference]: Start difference. First operand 2653 states and 3172 transitions. Second operand 7 states. [2020-09-25 12:29:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:29:01,371 INFO L93 Difference]: Finished difference Result 6241 states and 7630 transitions. [2020-09-25 12:29:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:29:01,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-09-25 12:29:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:29:01,386 INFO L225 Difference]: With dead ends: 6241 [2020-09-25 12:29:01,386 INFO L226 Difference]: Without dead ends: 3603 [2020-09-25 12:29:01,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:29:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2020-09-25 12:29:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3550. [2020-09-25 12:29:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3550 states. [2020-09-25 12:29:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4211 transitions. [2020-09-25 12:29:01,468 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4211 transitions. Word has length 260 [2020-09-25 12:29:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:29:01,468 INFO L479 AbstractCegarLoop]: Abstraction has 3550 states and 4211 transitions. [2020-09-25 12:29:01,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:29:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4211 transitions. [2020-09-25 12:29:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 12:29:01,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:29:01,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:01,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:29:01,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:29:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:29:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-25 12:29:01,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:29:01,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002930550] [2020-09-25 12:29:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:29:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking...