/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:19,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:19,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:19,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:19,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:19,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:19,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:19,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:19,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:19,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:19,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:19,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:19,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:19,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:19,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:19,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:19,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:19,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:19,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:19,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:19,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:19,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:19,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:19,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:19,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:19,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:19,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:19,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:19,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:19,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:19,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:19,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:19,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:19,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:19,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:19,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:19,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:19,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:19,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:19,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:19,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:19,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:32:19,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:19,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:19,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:19,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:19,354 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:19,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:19,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:19,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:19,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:19,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:19,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:19,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:19,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:19,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:19,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:19,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:19,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:19,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:19,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:19,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:19,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:19,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:19,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:19,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:19,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:19,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:19,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:19,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:19,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:19,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:19,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:19,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:19,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:19,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:19,902 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:19,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 13:32:19,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/decb4f39e/2a628de519854f2992a5d77d05947fe6/FLAG48e9f67e5 [2020-09-25 13:32:20,674 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:20,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 13:32:20,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/decb4f39e/2a628de519854f2992a5d77d05947fe6/FLAG48e9f67e5 [2020-09-25 13:32:20,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/decb4f39e/2a628de519854f2992a5d77d05947fe6 [2020-09-25 13:32:20,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:20,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:20,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:20,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:20,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:20,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:20" (1/1) ... [2020-09-25 13:32:20,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:20, skipping insertion in model container [2020-09-25 13:32:20,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:20" (1/1) ... [2020-09-25 13:32:20,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:21,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:21,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:21,550 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:21,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:21,839 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:21,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21 WrapperNode [2020-09-25 13:32:21,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:21,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:21,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:21,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:21,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:21,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:21,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:21,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:21,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:23,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:23,923 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:23,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:23 BoogieIcfgContainer [2020-09-25 13:32:23,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:23,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:23,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:23,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:23,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:20" (1/3) ... [2020-09-25 13:32:23,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c457dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:23, skipping insertion in model container [2020-09-25 13:32:23,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21" (2/3) ... [2020-09-25 13:32:23,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c457dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:23, skipping insertion in model container [2020-09-25 13:32:23,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:23" (3/3) ... [2020-09-25 13:32:23,943 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 13:32:23,955 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:23,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:23,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:24,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:24,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:24,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:24,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:24,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:24,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:24,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:24,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 13:32:24,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:24,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:24,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:24,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 13:32:24,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:24,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319136938] [2020-09-25 13:32:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:29,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 13:32:29,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:32:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:29,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:32:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:32:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:32:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:32:29,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:29,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:32:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:29,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319136938] [2020-09-25 13:32:29,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:29,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:29,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968639777] [2020-09-25 13:32:29,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:29,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:29,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:29,797 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:32,235 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 13:32:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:32,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 13:32:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:32,285 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 13:32:32,285 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 13:32:32,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 13:32:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 13:32:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 13:32:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 13:32:32,425 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 124 [2020-09-25 13:32:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:32,426 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 13:32:32,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 13:32:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:32:32,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:32,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:32,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:32,439 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash 180693394, now seen corresponding path program 1 times [2020-09-25 13:32:32,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:32,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91999593] [2020-09-25 13:32:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 13:32:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:32:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:32:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:32:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:32:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:32:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:32:37,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:37,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:32:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:37,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91999593] [2020-09-25 13:32:37,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:37,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107621404] [2020-09-25 13:32:37,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:37,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:37,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:37,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:37,742 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 13:32:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:40,045 INFO L93 Difference]: Finished difference Result 1546 states and 2048 transitions. [2020-09-25 13:32:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:40,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 13:32:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:40,055 INFO L225 Difference]: With dead ends: 1546 [2020-09-25 13:32:40,055 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 13:32:40,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 13:32:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 919. [2020-09-25 13:32:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-25 13:32:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1119 transitions. [2020-09-25 13:32:40,112 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1119 transitions. Word has length 150 [2020-09-25 13:32:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:40,113 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1119 transitions. [2020-09-25 13:32:40,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1119 transitions. [2020-09-25 13:32:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:32:40,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:40,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:40,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:40,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1775646540, now seen corresponding path program 1 times [2020-09-25 13:32:40,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:40,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203730674] [2020-09-25 13:32:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 13:32:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:32:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3602 [2020-09-25 13:32:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:32:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 13:32:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:43,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:43,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:32:43,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:32:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:32:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:32:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:44,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203730674] [2020-09-25 13:32:44,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:44,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:32:44,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090451266] [2020-09-25 13:32:44,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:32:44,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:32:44,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:44,089 INFO L87 Difference]: Start difference. First operand 919 states and 1119 transitions. Second operand 6 states. [2020-09-25 13:32:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:46,996 INFO L93 Difference]: Finished difference Result 2484 states and 3290 transitions. [2020-09-25 13:32:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:32:46,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 13:32:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:47,009 INFO L225 Difference]: With dead ends: 2484 [2020-09-25 13:32:47,009 INFO L226 Difference]: Without dead ends: 1587 [2020-09-25 13:32:47,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:32:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-09-25 13:32:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1530. [2020-09-25 13:32:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2020-09-25 13:32:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1946 transitions. [2020-09-25 13:32:47,077 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1946 transitions. Word has length 158 [2020-09-25 13:32:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:47,078 INFO L479 AbstractCegarLoop]: Abstraction has 1530 states and 1946 transitions. [2020-09-25 13:32:47,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:32:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1946 transitions. [2020-09-25 13:32:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 13:32:47,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:47,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:47,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:47,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1250009412, now seen corresponding path program 1 times [2020-09-25 13:32:47,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:47,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406095731] [2020-09-25 13:32:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 13:32:52,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:32:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 13:32:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 13:32:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:32:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:32:52,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:32:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:32:52,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 13:32:52,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:32:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:32:52,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406095731] [2020-09-25 13:32:52,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:52,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:52,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745748694] [2020-09-25 13:32:52,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:52,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:52,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:52,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:52,474 INFO L87 Difference]: Start difference. First operand 1530 states and 1946 transitions. Second operand 5 states. [2020-09-25 13:32:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:54,013 INFO L93 Difference]: Finished difference Result 4130 states and 5479 transitions. [2020-09-25 13:32:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:54,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 13:32:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:54,029 INFO L225 Difference]: With dead ends: 4130 [2020-09-25 13:32:54,029 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 13:32:54,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 13:32:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1806. [2020-09-25 13:32:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1806 states. [2020-09-25 13:32:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2255 transitions. [2020-09-25 13:32:54,126 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2255 transitions. Word has length 182 [2020-09-25 13:32:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:54,127 INFO L479 AbstractCegarLoop]: Abstraction has 1806 states and 2255 transitions. [2020-09-25 13:32:54,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2255 transitions. [2020-09-25 13:32:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:32:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:54,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:54,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:54,137 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1487586036, now seen corresponding path program 1 times [2020-09-25 13:32:54,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:54,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981147917] [2020-09-25 13:32:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 13:32:55,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-25 13:32:55,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:32:55,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:32:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:55,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:32:55,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:32:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:32:55,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:55,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981147917] [2020-09-25 13:32:55,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:55,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:32:55,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093367746] [2020-09-25 13:32:55,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:32:55,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:55,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:32:55,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:32:55,453 INFO L87 Difference]: Start difference. First operand 1806 states and 2255 transitions. Second operand 7 states. [2020-09-25 13:32:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:57,415 INFO L93 Difference]: Finished difference Result 3665 states and 4687 transitions. [2020-09-25 13:32:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:32:57,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 13:32:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:57,429 INFO L225 Difference]: With dead ends: 3665 [2020-09-25 13:32:57,429 INFO L226 Difference]: Without dead ends: 1881 [2020-09-25 13:32:57,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:32:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-25 13:32:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1807. [2020-09-25 13:32:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-09-25 13:32:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2168 transitions. [2020-09-25 13:32:57,515 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2168 transitions. Word has length 193 [2020-09-25 13:32:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2168 transitions. [2020-09-25 13:32:57,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:32:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2168 transitions. [2020-09-25 13:32:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 13:32:57,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:57,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:57,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:57,525 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:57,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1819143480, now seen corresponding path program 1 times [2020-09-25 13:32:57,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:57,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269294467] [2020-09-25 13:32:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3525 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:01,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:33:01,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:33:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:01,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269294467] [2020-09-25 13:33:01,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:01,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:01,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438707888] [2020-09-25 13:33:01,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:01,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:01,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:01,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:01,457 INFO L87 Difference]: Start difference. First operand 1807 states and 2168 transitions. Second operand 7 states. [2020-09-25 13:33:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:04,817 INFO L93 Difference]: Finished difference Result 3983 states and 4960 transitions. [2020-09-25 13:33:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:04,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-09-25 13:33:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:04,837 INFO L225 Difference]: With dead ends: 3983 [2020-09-25 13:33:04,837 INFO L226 Difference]: Without dead ends: 2198 [2020-09-25 13:33:04,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-09-25 13:33:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2030. [2020-09-25 13:33:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-09-25 13:33:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2337 transitions. [2020-09-25 13:33:04,916 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2337 transitions. Word has length 211 [2020-09-25 13:33:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:04,917 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 2337 transitions. [2020-09-25 13:33:04,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2337 transitions. [2020-09-25 13:33:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 13:33:04,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:04,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:04,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:33:04,926 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash -775955091, now seen corresponding path program 1 times [2020-09-25 13:33:04,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:04,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205844001] [2020-09-25 13:33:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 13:33:08,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3220 [2020-09-25 13:33:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:33:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:33:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:08,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:33:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:33:08,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 13:33:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:33:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:08,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205844001] [2020-09-25 13:33:08,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:08,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:08,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712933776] [2020-09-25 13:33:08,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:08,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:08,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:08,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:08,577 INFO L87 Difference]: Start difference. First operand 2030 states and 2337 transitions. Second operand 7 states.