/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:46:12,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:46:12,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:46:12,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:46:12,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:46:12,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:46:12,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:46:12,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:46:12,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:46:12,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:46:12,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:46:12,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:46:12,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:46:12,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:46:12,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:46:12,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:46:12,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:46:12,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:46:12,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:46:12,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:46:12,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:46:12,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:46:12,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:46:12,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:46:12,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:46:12,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:46:12,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:46:12,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:46:12,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:46:12,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:46:12,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:46:12,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:46:12,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:46:12,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:46:12,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:46:12,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:46:12,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:46:12,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:46:12,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:46:12,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:46:12,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:46:12,969 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 07:46:12,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:46:12,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:46:12,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:46:12,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:46:12,998 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:46:12,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:46:12,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:46:12,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:46:12,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:46:12,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:46:12,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:46:12,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:46:12,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:46:13,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:46:13,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:46:13,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:46:13,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:46:13,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:46:13,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:46:13,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:46:13,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:46:13,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:46:13,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:46:13,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:46:13,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:46:13,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:46:13,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:46:13,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:46:13,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:46:13,003 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:46:13,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:46:13,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:46:13,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:46:13,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:46:13,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:46:13,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 07:46:13,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6406ddf69/2bcd54479f054a2bb9875c46d8d32559/FLAG6d93322f4 [2020-09-25 07:46:14,178 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:46:14,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 07:46:14,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6406ddf69/2bcd54479f054a2bb9875c46d8d32559/FLAG6d93322f4 [2020-09-25 07:46:14,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6406ddf69/2bcd54479f054a2bb9875c46d8d32559 [2020-09-25 07:46:14,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:46:14,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:46:14,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:14,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:46:14,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:46:14,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14, skipping insertion in model container [2020-09-25 07:46:14,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:46:14,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:46:14,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:14,803 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:46:14,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:14,844 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:46:14,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14 WrapperNode [2020-09-25 07:46:14,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:14,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:46:14,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:46:14,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:46:14,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (1/1) ... [2020-09-25 07:46:14,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:46:14,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:46:14,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:46:14,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:46:14,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (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 07:46:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:46:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:46:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 07:46:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:46:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:46:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:46:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 07:46:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:46:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:46:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:46:15,271 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:46:15,271 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:46:15,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:15 BoogieIcfgContainer [2020-09-25 07:46:15,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:46:15,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:46:15,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:46:15,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:46:15,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:46:14" (1/3) ... [2020-09-25 07:46:15,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ab3afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:15, skipping insertion in model container [2020-09-25 07:46:15,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:14" (2/3) ... [2020-09-25 07:46:15,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ab3afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:15, skipping insertion in model container [2020-09-25 07:46:15,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:15" (3/3) ... [2020-09-25 07:46:15,287 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 07:46:15,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:46:15,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:46:15,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:46:15,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:46:15,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:46:15,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:46:15,363 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:46:15,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:46:15,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:46:15,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:46:15,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:46:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 07:46:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:46:15,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:15,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:15,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:15,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 07:46:15,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:15,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489837698] [2020-09-25 07:46:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:15,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:15,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:46:15,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:15,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 07:46:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:46:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:46:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:46:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:46:15,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:46:15,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:15,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:15,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:15,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:46:15,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:15,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:15,928 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 07:46:15,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489837698] [2020-09-25 07:46:15,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:46:15,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:46:15,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176686894] [2020-09-25 07:46:15,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:46:15,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:46:15,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:46:15,969 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 07:46:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:16,062 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 07:46:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:46:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 07:46:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:16,080 INFO L225 Difference]: With dead ends: 37 [2020-09-25 07:46:16,080 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 07:46:16,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:46:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 07:46:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 07:46:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 07:46:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 07:46:16,172 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 07:46:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:16,172 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 07:46:16,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:46:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 07:46:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 07:46:16,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:16,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:16,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:46:16,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:16,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:16,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 07:46:16,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:16,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174417958] [2020-09-25 07:46:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:16,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:16,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 07:46:16,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-25 07:46:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:46:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:46:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:16,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:16,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:16,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:16,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:46:16,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:16,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:16,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 07:46:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:46:16,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:46:16,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174417958] [2020-09-25 07:46:16,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:16,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:46:16,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809024435] [2020-09-25 07:46:16,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:46:16,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:16,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:46:16,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:46:16,927 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 07:46:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:17,006 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 07:46:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:46:17,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 07:46:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:17,009 INFO L225 Difference]: With dead ends: 34 [2020-09-25 07:46:17,009 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 07:46:17,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 07:46:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 07:46:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 07:46:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 07:46:17,018 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 07:46:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:17,019 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 07:46:17,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:46:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 07:46:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 07:46:17,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:17,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:17,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:46:17,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 07:46:17,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:17,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994297455] [2020-09-25 07:46:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:17,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:46:17,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 07:46:17,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:17,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 07:46:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:46:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:17,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:17,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:17,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:17,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:17,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:17,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 07:46:17,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:17,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:46:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:17,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:17,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:46:17,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:17,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:17,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 07:46:17,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994297455] [2020-09-25 07:46:17,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:17,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:46:17,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436695969] [2020-09-25 07:46:17,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:46:17,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:46:17,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:17,741 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 07:46:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:17,825 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 07:46:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:46:17,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 07:46:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:17,827 INFO L225 Difference]: With dead ends: 39 [2020-09-25 07:46:17,828 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 07:46:17,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:46:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 07:46:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 07:46:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 07:46:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 07:46:17,836 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 07:46:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:17,837 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 07:46:17,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:46:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 07:46:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 07:46:17,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:17,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:17,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:46:17,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 07:46:17,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:17,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114710976] [2020-09-25 07:46:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:18,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:46:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-09-25 07:46:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:18,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:46:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 07:46:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:46:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:18,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:18,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:18,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:18,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:18,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:18,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 07:46:18,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:18,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:18,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:18,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:18,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:18,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 07:46:18,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:18,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:46:19,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:19,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:19,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:46:19,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:19,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 07:46:19,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114710976] [2020-09-25 07:46:19,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:19,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:46:19,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280178784] [2020-09-25 07:46:19,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:46:19,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:19,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:46:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:46:19,094 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 07:46:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:19,194 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 07:46:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:46:19,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 07:46:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:19,196 INFO L225 Difference]: With dead ends: 44 [2020-09-25 07:46:19,196 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 07:46:19,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:46:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 07:46:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 07:46:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 07:46:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 07:46:19,205 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 07:46:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:19,205 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 07:46:19,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:46:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 07:46:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 07:46:19,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:19,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:19,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:46:19,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:19,208 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 07:46:19,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:19,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423334343] [2020-09-25 07:46:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:20,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:20,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 07:46:20,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:20,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-09-25 07:46:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:20,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:46:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 07:46:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:46:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:20,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:20,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:20,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:20,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 07:46:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:20,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:21,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 07:46:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:21,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:21,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:21,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:21,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:46:21,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:21,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:21,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:46:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:21,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:46:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:21,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 07:46:21,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423334343] [2020-09-25 07:46:21,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:21,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:46:21,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958255432] [2020-09-25 07:46:21,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:46:21,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:46:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:46:21,338 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 07:46:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:21,462 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 07:46:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:46:21,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 07:46:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:21,464 INFO L225 Difference]: With dead ends: 49 [2020-09-25 07:46:21,464 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 07:46:21,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:46:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 07:46:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 07:46:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 07:46:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 07:46:21,472 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 07:46:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:21,473 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 07:46:21,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:46:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 07:46:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:46:21,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:21,475 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:21,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:46:21,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 07:46:21,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:21,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051087050] [2020-09-25 07:46:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:46:23,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2146 [2020-09-25 07:46:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:46:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 07:46:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:46:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:23,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:23,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 07:46:23,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:24,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 07:46:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 07:46:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:46:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:24,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:46:24,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:24,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:46:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 07:46:24,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051087050] [2020-09-25 07:46:24,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:24,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:46:24,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234420764] [2020-09-25 07:46:24,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:46:24,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:46:24,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:46:24,669 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 07:46:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:24,867 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 07:46:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 07:46:24,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 07:46:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:24,870 INFO L225 Difference]: With dead ends: 54 [2020-09-25 07:46:24,872 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 07:46:24,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:46:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 07:46:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 07:46:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 07:46:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 07:46:24,889 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 07:46:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:24,889 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 07:46:24,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:46:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 07:46:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 07:46:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:24,894 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:24,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:46:24,894 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 07:46:24,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:24,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229171346] [2020-09-25 07:46:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:27,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:46:27,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-09-25 07:46:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:27,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:46:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 07:46:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:46:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:27,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:27,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:27,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:27,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:28,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 07:46:28,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:46:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:46:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 07:46:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:28,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 07:46:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:28,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:46:28,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 07:46:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:28,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:46:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:46:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 07:46:29,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229171346] [2020-09-25 07:46:29,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:29,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 07:46:29,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007570359] [2020-09-25 07:46:29,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 07:46:29,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:29,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 07:46:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:46:29,016 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 07:46:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:29,208 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 07:46:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 07:46:29,209 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 07:46:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:29,210 INFO L225 Difference]: With dead ends: 59 [2020-09-25 07:46:29,210 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 07:46:29,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:46:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 07:46:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 07:46:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 07:46:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 07:46:29,226 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 07:46:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:29,227 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 07:46:29,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 07:46:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 07:46:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 07:46:29,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:29,230 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:29,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:46:29,233 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 07:46:29,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:29,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747565488] [2020-09-25 07:46:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 07:46:32,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-09-25 07:46:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:32,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:46:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:46:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:46:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:32,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:32,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:32,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:32,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:46:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 07:46:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:33,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:46:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:46:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:46:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:46:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 07:46:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:33,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 07:46:34,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:34,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:46:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:34,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 07:46:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:34,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:34,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:46:34,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:34,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:46:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:34,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 07:46:34,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747565488] [2020-09-25 07:46:34,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:34,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 07:46:34,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280701708] [2020-09-25 07:46:34,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 07:46:34,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:34,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 07:46:34,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:46:34,393 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 07:46:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:34,563 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 07:46:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 07:46:34,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 07:46:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:34,568 INFO L225 Difference]: With dead ends: 64 [2020-09-25 07:46:34,568 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 07:46:34,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:46:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 07:46:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 07:46:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 07:46:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 07:46:34,584 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 07:46:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:34,587 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 07:46:34,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 07:46:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 07:46:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 07:46:34,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:34,589 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:34,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:46:34,589 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 07:46:34,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:34,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457965154] [2020-09-25 07:46:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:38,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4332 [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 07:46:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:46:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:46:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:38,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:38,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:38,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:46:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:46:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:46:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 07:46:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:46:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:46:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 07:46:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:40,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 07:46:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:40,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:40,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:40,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:46:40,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:40,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:40,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:46:40,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:40,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:40,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:46:40,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:40,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 07:46:40,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457965154] [2020-09-25 07:46:40,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:40,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 07:46:40,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443838035] [2020-09-25 07:46:40,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 07:46:40,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 07:46:40,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:46:40,794 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 07:46:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:40,961 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 07:46:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 07:46:40,962 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 07:46:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:40,963 INFO L225 Difference]: With dead ends: 69 [2020-09-25 07:46:40,963 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 07:46:40,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 07:46:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 07:46:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 07:46:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 07:46:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 07:46:40,971 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 07:46:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:40,971 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 07:46:40,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 07:46:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 07:46:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 07:46:40,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:40,973 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:40,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:46:40,973 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 07:46:40,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:40,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140764834] [2020-09-25 07:46:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:45,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:45,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:46:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:46,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:46:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-09-25 07:46:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 07:46:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:46:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:46,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:46,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 07:46:46,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 07:46:46,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:46,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:46:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:46:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:47,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:46:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:46:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:47,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:47,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:47,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 07:46:47,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:47,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:46:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:46:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 07:46:47,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:47,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:47,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:47,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:47,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:48,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 07:46:48,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:48,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:48,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:48,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:48,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:48,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:48,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:48,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:46:48,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:48,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:48,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 07:46:48,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140764834] [2020-09-25 07:46:48,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:48,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 07:46:48,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181148941] [2020-09-25 07:46:48,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 07:46:48,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 07:46:48,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:46:48,316 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 07:46:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:48,565 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 07:46:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 07:46:48,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 07:46:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:48,567 INFO L225 Difference]: With dead ends: 74 [2020-09-25 07:46:48,567 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 07:46:48,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 07:46:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 07:46:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 07:46:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 07:46:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 07:46:48,586 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 07:46:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:48,586 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 07:46:48,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 07:46:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 07:46:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 07:46:48,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:48,590 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:48,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:46:48,590 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:48,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 07:46:48,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:48,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713653097] [2020-09-25 07:46:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:46:48,612 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:46:48,612 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:46:48,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:46:48,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:46:48 BoogieIcfgContainer [2020-09-25 07:46:48,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:46:48,658 INFO L168 Benchmark]: Toolchain (without parser) took 34120.98 ms. Allocated memory was 138.4 MB in the beginning and 432.0 MB in the end (delta: 293.6 MB). Free memory was 101.7 MB in the beginning and 232.0 MB in the end (delta: -130.4 MB). Peak memory consumption was 163.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,659 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.12 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,667 INFO L168 Benchmark]: Boogie Preprocessor took 37.37 ms. Allocated memory is still 138.4 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,672 INFO L168 Benchmark]: RCFGBuilder took 393.26 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 169.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,676 INFO L168 Benchmark]: TraceAbstraction took 33375.14 ms. Allocated memory was 201.9 MB in the beginning and 432.0 MB in the end (delta: 230.2 MB). Free memory was 169.4 MB in the beginning and 232.0 MB in the end (delta: -62.7 MB). Peak memory consumption was 167.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:48,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.12 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.37 ms. Allocated memory is still 138.4 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.26 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 169.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33375.14 ms. Allocated memory was 201.9 MB in the beginning and 432.0 MB in the end (delta: 230.2 MB). Free memory was 169.4 MB in the beginning and 232.0 MB in the end (delta: -62.7 MB). Peak memory consumption was 167.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.2s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 93 SDslu, 1099 SDs, 0 SdLazy, 449 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.0s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 69960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1140 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 incorrect! Received shutdown request...