/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:59:48,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:59:48,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:59:48,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:59:48,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:59:48,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:59:48,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:59:48,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:59:48,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:59:48,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:59:48,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:59:48,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:59:48,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:59:48,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:59:48,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:59:48,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:59:48,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:59:48,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:59:48,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:59:48,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:59:48,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:59:48,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:59:48,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:59:48,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:59:48,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:59:48,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:59:48,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:59:48,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:59:48,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:59:48,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:59:48,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:59:48,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:59:48,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:59:48,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:59:48,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:59:48,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:59:48,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:59:48,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:59:48,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:59:48,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:59:48,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:59:48,995 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 [2020-10-15 04:59:49,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:59:49,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:59:49,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:59:49,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:59:49,037 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:59:49,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:59:49,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:59:49,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:59:49,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:59:49,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:59:49,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:59:49,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:59:49,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:59:49,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:59:49,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:59:49,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:59:49,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:59:49,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:59:49,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:59:49,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:59:49,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:59:49,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:59:49,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:59:49,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:59:49,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:59:49,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:59:49,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:59:49,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:59:49,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:59:49,043 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:59:49,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:59:49,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:59:49,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:59:49,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:59:49,373 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:59:49,374 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-15 04:59:49,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e900af928/743934909d214d0bbd6d8478fd4c5fc0/FLAGd68158d4b [2020-10-15 04:59:49,917 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:59:49,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-15 04:59:49,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e900af928/743934909d214d0bbd6d8478fd4c5fc0/FLAGd68158d4b [2020-10-15 04:59:50,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e900af928/743934909d214d0bbd6d8478fd4c5fc0 [2020-10-15 04:59:50,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:59:50,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:59:50,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:59:50,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:59:50,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:59:50,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b03bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50, skipping insertion in model container [2020-10-15 04:59:50,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:59:50,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:59:50,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:59:50,560 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:59:50,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:59:50,601 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:59:50,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50 WrapperNode [2020-10-15 04:59:50,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:59:50,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:59:50,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:59:50,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:59:50,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (1/1) ... [2020-10-15 04:59:50,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:59:50,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:59:50,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:59:50,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:59:50,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (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 [2020-10-15 04:59:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:59:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:59:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:59:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 04:59:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-15 04:59:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:59:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:59:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:59:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 04:59:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:59:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:59:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:59:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:59:51,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:59:51,082 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:59:51,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:59:51 BoogieIcfgContainer [2020-10-15 04:59:51,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:59:51,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:59:51,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:59:51,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:59:51,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:59:50" (1/3) ... [2020-10-15 04:59:51,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:59:51, skipping insertion in model container [2020-10-15 04:59:51,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:59:50" (2/3) ... [2020-10-15 04:59:51,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:59:51, skipping insertion in model container [2020-10-15 04:59:51,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:59:51" (3/3) ... [2020-10-15 04:59:51,097 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-10-15 04:59:51,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:59:51,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:59:51,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:59:51,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:59:51,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:59:51,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:59:51,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:59:51,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:59:51,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:59:51,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:59:51,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:59:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-15 04:59:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 04:59:51,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:59:51,197 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:59:51,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:59:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:59:51,204 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-10-15 04:59:51,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:59:51,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285001753] [2020-10-15 04:59:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:59:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 04:59:51,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:59:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-15 04:59:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:51,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 04:59:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:59:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:59:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:59:52,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:59:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:52,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:59:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:52,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:52,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:59:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:59:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:59:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:52,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:59:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:52,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:52,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:59:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:59:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:52,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 04:59:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:52,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 04:59:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:52,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:52,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:59:52,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:52,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 04:59:52,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285001753] [2020-10-15 04:59:52,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:59:52,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:59:52,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846313333] [2020-10-15 04:59:52,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:59:52,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:59:52,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:59:52,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:59:52,111 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 8 states. [2020-10-15 04:59:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:59:52,588 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2020-10-15 04:59:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:59:52,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-15 04:59:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:59:52,601 INFO L225 Difference]: With dead ends: 99 [2020-10-15 04:59:52,601 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 04:59:52,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:59:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 04:59:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 04:59:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 04:59:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-15 04:59:52,661 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 30 [2020-10-15 04:59:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:59:52,662 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-15 04:59:52,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:59:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-15 04:59:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 04:59:52,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:59:52,665 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:59:52,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:59:52,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:59:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:59:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-10-15 04:59:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:59:52,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067440526] [2020-10-15 04:59:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:59:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 04:59:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:59:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-15 04:59:53,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:59:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 04:59:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:59:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:59:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:53,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:59:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:59:53,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:59:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:53,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:53,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:59:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:59:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:59:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 04:59:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:59:53,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:59:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 04:59:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 04:59:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:53,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:53,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:53,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:53,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:59:53,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:53,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:59:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:59:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:59:53,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067440526] [2020-10-15 04:59:53,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:59:53,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 04:59:53,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994374697] [2020-10-15 04:59:53,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:59:53,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:59:53,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:59:53,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:59:53,781 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 13 states. [2020-10-15 04:59:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:59:54,347 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-15 04:59:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 04:59:54,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-15 04:59:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:59:54,352 INFO L225 Difference]: With dead ends: 68 [2020-10-15 04:59:54,352 INFO L226 Difference]: Without dead ends: 58 [2020-10-15 04:59:54,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:59:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-15 04:59:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-15 04:59:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 04:59:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-15 04:59:54,367 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 33 [2020-10-15 04:59:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:59:54,368 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-15 04:59:54,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 04:59:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-15 04:59:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 04:59:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:59:54,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-15 04:59:54,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:59:54,371 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:59:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:59:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash 570145691, now seen corresponding path program 1 times [2020-10-15 04:59:54,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:59:54,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986919500] [2020-10-15 04:59:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:59:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 04:59:55,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:59:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-15 04:59:55,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:59:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 04:59:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:59:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:59:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:59:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:59:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:59:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:55,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 04:59:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:59:55,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:59:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:59:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:59:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:55,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:59:55,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:59:55,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:59:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 04:59:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:55,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:55,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:59:55,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:55,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:59:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:59:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 04:59:55,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986919500] [2020-10-15 04:59:55,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:59:55,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 04:59:55,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912306863] [2020-10-15 04:59:55,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:59:55,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:59:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:59:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:59:55,524 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 10 states. [2020-10-15 04:59:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:59:56,016 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-10-15 04:59:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:59:56,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-15 04:59:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:59:56,022 INFO L225 Difference]: With dead ends: 86 [2020-10-15 04:59:56,023 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 04:59:56,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:59:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 04:59:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 04:59:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 04:59:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-15 04:59:56,042 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2020-10-15 04:59:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:59:56,043 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-15 04:59:56,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:59:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-15 04:59:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 04:59:56,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:59:56,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-15 04:59:56,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:59:56,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:59:56,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:59:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-10-15 04:59:56,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:59:56,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162207595] [2020-10-15 04:59:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:59:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 04:59:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:59:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-15 04:59:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:56,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:59:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:59:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:59:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:59:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:56,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:59:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:56,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 04:59:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:56,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:56,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:56,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:56,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 04:59:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:56,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:56,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:56,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:56,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:56,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:56,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:56,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:56,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 04:59:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:59:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:59:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:56,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:59:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:59:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:59:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:57,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:59:57,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:57,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:59:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:59:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 04:59:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:59:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 04:59:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:59:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:59:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:59:57,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:59:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:59:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:59:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 04:59:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:59:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 04:59:57,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162207595] [2020-10-15 04:59:57,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:59:57,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:59:57,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506053779] [2020-10-15 04:59:57,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:59:57,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:59:57,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:59:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:59:57,028 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 10 states. [2020-10-15 04:59:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:59:57,513 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-15 04:59:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:59:57,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-15 04:59:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:59:57,515 INFO L225 Difference]: With dead ends: 62 [2020-10-15 04:59:57,516 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 04:59:57,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:59:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 04:59:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-15 04:59:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 04:59:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-15 04:59:57,537 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 45 [2020-10-15 04:59:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:59:57,539 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-15 04:59:57,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:59:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-15 04:59:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 04:59:57,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:59:57,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-15 04:59:57,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:59:57,543 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:59:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:59:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-10-15 04:59:57,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:59:57,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090943838] [2020-10-15 04:59:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:59:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:59:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:59:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:00,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:00,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 05:00:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:00:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3427 [2020-10-15 05:00:00,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:00,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 05:00:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 05:00:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 05:00:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:01,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 05:00:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:01,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 05:00:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 05:00:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 05:00:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:01,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:01,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 05:00:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 05:00:01,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090943838] [2020-10-15 05:00:01,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:01,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 05:00:01,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903362777] [2020-10-15 05:00:01,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 05:00:01,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:01,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 05:00:01,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-15 05:00:01,253 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 12 states. [2020-10-15 05:00:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:01,730 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-15 05:00:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 05:00:01,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-15 05:00:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:01,732 INFO L225 Difference]: With dead ends: 68 [2020-10-15 05:00:01,733 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 05:00:01,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-15 05:00:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 05:00:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-15 05:00:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 05:00:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-15 05:00:01,751 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 48 [2020-10-15 05:00:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:01,752 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-15 05:00:01,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 05:00:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-15 05:00:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 05:00:01,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:01,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-15 05:00:01,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 05:00:01,762 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1245796655, now seen corresponding path program 1 times [2020-10-15 05:00:01,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:01,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124741572] [2020-10-15 05:00:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 05:00:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 05:00:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 05:00:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:00:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 05:00:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 05:00:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:06,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 05:00:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:06,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 05:00:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 05:00:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 05:00:06,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 05:00:06,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:06,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 05:00:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 05:00:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 05:00:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:07,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:07,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 05:00:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:07,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:07,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 05:00:07,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124741572] [2020-10-15 05:00:07,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 05:00:07,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 05:00:07,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011698098] [2020-10-15 05:00:07,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 05:00:07,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 05:00:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 05:00:07,024 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 10 states. [2020-10-15 05:00:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:07,344 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-15 05:00:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 05:00:07,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-15 05:00:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:07,346 INFO L225 Difference]: With dead ends: 62 [2020-10-15 05:00:07,346 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 05:00:07,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-15 05:00:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 05:00:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 05:00:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 05:00:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 05:00:07,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-10-15 05:00:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:07,349 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 05:00:07,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 05:00:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 05:00:07,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 05:00:07,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 05:00:07,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 05:00:07,637 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-15 05:00:07,773 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-15 05:00:08,017 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,018 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-15 05:00:08,018 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,018 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,018 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 05:00:08,019 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 05:00:08,019 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,019 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-10-15 05:00:08,019 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-15 05:00:08,019 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-15 05:00:08,019 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-15 05:00:08,019 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-15 05:00:08,020 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-10-15 05:00:08,020 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= main_~ai~1 main_~ax~1) (or (= main_~i~0 0) (and (<= (+ main_~i~0 1) main_~n~0) (< 0 main_~i~0)))) [2020-10-15 05:00:08,020 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-15 05:00:08,020 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0) (or (= main_~i~0 0) (and (<= (+ main_~i~0 1) main_~n~0) (< 0 main_~i~0))))) [2020-10-15 05:00:08,020 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-10-15 05:00:08,021 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (or (= main_~i~0 0) (and (<= (+ main_~i~0 1) main_~n~0) (< 0 main_~i~0)))) [2020-10-15 05:00:08,021 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-15 05:00:08,021 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-15 05:00:08,021 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-10-15 05:00:08,021 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-10-15 05:00:08,021 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-15 05:00:08,021 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-10-15 05:00:08,022 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse4 (not (= (select |#memory_int| |check_#in~a.base|) .cse5))) (.cse1 (= check_~ai~0 check_~ax~0)) (.cse2 (= (select |#memory_int| check_~a.base) .cse5)) (.cse3 (<= 1 check_~x))) (and (or .cse0 (and .cse1 (<= (+ check_~y 1) check_~n) .cse2 .cse3) (not (<= 1 |check_#in~x|)) .cse4) (or .cse0 (not (= |check_#in~x| 0)) .cse4 (and .cse1 (< check_~y check_~n) .cse2 .cse3))))) [2020-10-15 05:00:08,022 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-15 05:00:08,022 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-10-15 05:00:08,022 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-15 05:00:08,022 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-10-15 05:00:08,023 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 25) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (and (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse3) (<= 1 check_~x))) (.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) (and (or .cse0 .cse1 (not (= |check_#in~x| 0)) .cse2) (or .cse0 .cse1 (not (<= 1 |check_#in~x|)) .cse2)))) [2020-10-15 05:00:08,023 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-15 05:00:08,023 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-10-15 05:00:08,023 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse4))) (.cse0 (<= (+ |check_#in~y| check_~x) (+ |check_#in~x| check_~y))) (.cse1 (= (select |#memory_int| check_~a.base) .cse4))) (and (or (and (<= check_~x |check_#in~x|) .cse0 (<= (+ check_~y 1) check_~n) .cse1 (<= |check_#in~x| check_~x)) .cse2 (not (<= 1 |check_#in~x|)) .cse3) (or .cse2 (not (= |check_#in~x| 0)) .cse3 (and (< check_~y check_~n) .cse0 .cse1 (= check_~x 0)))))) [2020-10-15 05:00:08,023 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse4))) (.cse0 (<= (+ |check_#in~y| check_~x) (+ |check_#in~x| check_~y))) (.cse1 (= (select |#memory_int| check_~a.base) .cse4))) (and (or (and (<= check_~x |check_#in~x|) .cse0 (<= (+ check_~y 1) check_~n) .cse1 (<= |check_#in~x| check_~x)) .cse2 (not (<= 1 |check_#in~x|)) .cse3) (or .cse2 (not (= |check_#in~x| 0)) .cse3 (and (< check_~y check_~n) .cse0 .cse1 (= check_~x 0)))))) [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-10-15 05:00:08,024 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-15 05:00:08,024 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-10-15 05:00:08,025 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-15 05:00:08,025 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-15 05:00:08,025 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,025 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-15 05:00:08,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:00:08 BoogieIcfgContainer [2020-10-15 05:00:08,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 05:00:08,033 INFO L168 Benchmark]: Toolchain (without parser) took 17720.92 ms. Allocated memory was 147.8 MB in the beginning and 389.0 MB in the end (delta: 241.2 MB). Free memory was 103.5 MB in the beginning and 95.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,034 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 147.8 MB. Free memory was 103.1 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,036 INFO L168 Benchmark]: Boogie Preprocessor took 137.55 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,037 INFO L168 Benchmark]: RCFGBuilder took 348.41 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 162.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,038 INFO L168 Benchmark]: TraceAbstraction took 16941.43 ms. Allocated memory was 204.5 MB in the beginning and 389.0 MB in the end (delta: 184.5 MB). Free memory was 162.6 MB in the beginning and 95.1 MB in the end (delta: 67.4 MB). Peak memory consumption was 252.0 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:08,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 147.8 MB. Free memory was 103.1 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.55 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.41 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 162.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16941.43 ms. Allocated memory was 204.5 MB in the beginning and 389.0 MB in the end (delta: 184.5 MB). Free memory was 162.6 MB in the beginning and 95.1 MB in the end (delta: 67.4 MB). Peak memory consumption was 252.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 373 SDslu, 380 SDs, 0 SdLazy, 1640 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 66 PreInvPairs, 80 NumberOfFragments, 401 HoareAnnotationTreeSize, 66 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 464 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 30162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 77/82 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...