/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:46:42,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:46:42,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:46:42,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:46:42,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:46:42,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:46:42,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:46:42,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:46:42,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:46:42,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:46:42,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:46:42,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:46:42,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:46:42,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:46:42,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:46:42,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:46:42,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:46:42,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:46:42,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:46:42,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:46:42,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:46:42,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:46:42,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:46:42,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:46:43,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:46:43,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:46:43,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:46:43,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:46:43,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:46:43,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:46:43,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:46:43,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:46:43,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:46:43,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:46:43,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:46:43,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:46:43,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:46:43,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:46:43,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:46:43,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:46:43,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:46:43,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:46:43,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:46:43,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:46:43,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:46:43,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:46:43,052 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:46:43,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:46:43,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:46:43,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:46:43,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:46:43,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:46:43,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:46:43,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:46:43,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:46:43,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:46:43,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:46:43,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:46:43,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:46:43,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:46:43,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:46:43,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:46:43,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:46:43,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:46:43,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:46:43,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:46:43,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:46:43,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:46:43,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:46:43,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:46:43,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:46:43,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:46:43,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-29 09:46:43,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9532718f/cc6db1956f2b4ba0a361dcbaa5f29ed8/FLAG3da574bd6 [2020-10-29 09:46:44,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:46:44,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-29 09:46:44,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9532718f/cc6db1956f2b4ba0a361dcbaa5f29ed8/FLAG3da574bd6 [2020-10-29 09:46:44,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9532718f/cc6db1956f2b4ba0a361dcbaa5f29ed8 [2020-10-29 09:46:44,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:46:44,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:46:44,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:46:44,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:46:44,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:46:44,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1ef42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44, skipping insertion in model container [2020-10-29 09:46:44,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:46:44,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:46:44,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:46:44,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:46:44,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:46:44,877 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:46:44,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44 WrapperNode [2020-10-29 09:46:44,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:46:44,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:46:44,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:46:44,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:46:44,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... [2020-10-29 09:46:44,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:46:44,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:46:44,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:46:44,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:46:44,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:46:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:46:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:46:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:46:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:46:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:46:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:46:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:46:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:46:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:46:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:46:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:46:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:46:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:46:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:46:45,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:46:45,477 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:46:45,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:46:45 BoogieIcfgContainer [2020-10-29 09:46:45,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:46:45,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:46:45,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:46:45,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:46:45,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:46:44" (1/3) ... [2020-10-29 09:46:45,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b7946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:46:45, skipping insertion in model container [2020-10-29 09:46:45,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:46:44" (2/3) ... [2020-10-29 09:46:45,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b7946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:46:45, skipping insertion in model container [2020-10-29 09:46:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:46:45" (3/3) ... [2020-10-29 09:46:45,490 INFO L111 eAbstractionObserver]: Analyzing ICFG iftelse.c [2020-10-29 09:46:45,503 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:46:45,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:46:45,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:46:45,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:46:45,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:46:45,563 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:46:45,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:46:45,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:46:45,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:46:45,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:46:45,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:46:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:46:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:46:45,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:45,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:45,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:45,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1998780481, now seen corresponding path program 1 times [2020-10-29 09:46:45,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:45,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282930775] [2020-10-29 09:46:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:46:46,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-29 09:46:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:46,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:46:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:46:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:46:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:46,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:46,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:46,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:46:46,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:46,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:46,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282930775] [2020-10-29 09:46:46,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:46:46,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:46:46,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445799265] [2020-10-29 09:46:46,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:46:46,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:46:46,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:46:46,857 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-10-29 09:46:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:47,479 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2020-10-29 09:46:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:46:47,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-29 09:46:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:47,492 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:46:47,493 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 09:46:47,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:46:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 09:46:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-29 09:46:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:46:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 09:46:47,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-10-29 09:46:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:47,544 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 09:46:47,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:46:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 09:46:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:46:47,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:47,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:47,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:46:47,546 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 564376382, now seen corresponding path program 1 times [2020-10-29 09:46:47,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:47,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533497517] [2020-10-29 09:46:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:46:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:46:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-29 09:46:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:46:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:46:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:46:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:48,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533497517] [2020-10-29 09:46:48,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:48,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:46:48,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464259446] [2020-10-29 09:46:48,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:46:48,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:48,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:46:48,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:46:48,293 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2020-10-29 09:46:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:48,526 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-29 09:46:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:46:48,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-29 09:46:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:48,530 INFO L225 Difference]: With dead ends: 42 [2020-10-29 09:46:48,530 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 09:46:48,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:46:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 09:46:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-29 09:46:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 09:46:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-29 09:46:48,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-10-29 09:46:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:48,546 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-29 09:46:48,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:46:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-29 09:46:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:46:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:48,547 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:48,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:46:48,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1955583552, now seen corresponding path program 1 times [2020-10-29 09:46:48,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:48,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053186059] [2020-10-29 09:46:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:46:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:46:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-29 09:46:49,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:49,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:46:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:46:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:49,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:49,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:46:49,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:49,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:49,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053186059] [2020-10-29 09:46:49,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:49,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:46:49,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399632051] [2020-10-29 09:46:49,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:46:49,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:46:49,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:46:49,356 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 9 states. [2020-10-29 09:46:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:49,845 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-29 09:46:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:46:49,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-29 09:46:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:49,848 INFO L225 Difference]: With dead ends: 38 [2020-10-29 09:46:49,848 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 09:46:49,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:46:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 09:46:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-29 09:46:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 09:46:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-29 09:46:49,859 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 18 [2020-10-29 09:46:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:49,860 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-29 09:46:49,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:46:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-29 09:46:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:46:49,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:49,861 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:49,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:46:49,861 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:49,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1531536033, now seen corresponding path program 2 times [2020-10-29 09:46:49,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:49,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372059748] [2020-10-29 09:46:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:50,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:50,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:46:50,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:46:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 09:46:50,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:50,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:50,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:46:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:46:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:50,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:50,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:46:50,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:50,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:50,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372059748] [2020-10-29 09:46:50,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:50,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:46:50,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562277773] [2020-10-29 09:46:50,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:46:50,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:50,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:46:50,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:46:50,820 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 11 states. [2020-10-29 09:46:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:51,453 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-10-29 09:46:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:46:51,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-29 09:46:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:51,455 INFO L225 Difference]: With dead ends: 49 [2020-10-29 09:46:51,456 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:46:51,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:46:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:46:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:46:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:46:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-29 09:46:51,469 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 21 [2020-10-29 09:46:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:51,470 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-29 09:46:51,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:46:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-29 09:46:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:46:51,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:51,471 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:51,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:46:51,472 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash 243471329, now seen corresponding path program 3 times [2020-10-29 09:46:51,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:51,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090803117] [2020-10-29 09:46:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:46:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:46:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:46:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:46:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:52,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:46:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090803117] [2020-10-29 09:46:52,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:46:52,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:46:52,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848469163] [2020-10-29 09:46:52,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:46:52,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:46:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:46:52,456 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 4 states. [2020-10-29 09:46:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:52,546 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-29 09:46:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:46:52,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-29 09:46:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:52,554 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:46:52,554 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:46:52,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:46:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:46:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:46:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:46:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-29 09:46:52,582 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2020-10-29 09:46:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:52,583 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-29 09:46:52,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:46:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-29 09:46:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:46:52,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:52,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:52,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:46:52,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash 94832851, now seen corresponding path program 1 times [2020-10-29 09:46:52,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:52,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653684359] [2020-10-29 09:46:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:46:53,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:46:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-29 09:46:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:46:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:46:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:46:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:46:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:53,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:46:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:46:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:46:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:53,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:46:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:46:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:46:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:53,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:53,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:46:53,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:53,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:46:53,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:53,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:53,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:46:53,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:53,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:46:53,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:46:53,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653684359] [2020-10-29 09:46:53,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:53,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:46:53,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126347717] [2020-10-29 09:46:53,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:46:53,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:46:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:46:53,499 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 5 states. [2020-10-29 09:46:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:55,723 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-29 09:46:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:46:55,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-29 09:46:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:55,741 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:46:55,741 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:46:55,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:46:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:46:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-29 09:46:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:46:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-29 09:46:55,756 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 31 [2020-10-29 09:46:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:55,756 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-29 09:46:55,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:46:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-29 09:46:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:46:55,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:55,758 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:55,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:46:55,758 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:55,759 INFO L82 PathProgramCache]: Analyzing trace with hash 69596954, now seen corresponding path program 2 times [2020-10-29 09:46:55,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:55,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509955776] [2020-10-29 09:46:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:57,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:00,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:47:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:47:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 09:47:00,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:00,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:47:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:47:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:47:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:01,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:01,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:47:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:01,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:01,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:01,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:47:01,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:01,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:47:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:01,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:01,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:01,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:47:01,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:01,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 09:47:01,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509955776] [2020-10-29 09:47:01,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:01,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:47:01,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497637608] [2020-10-29 09:47:01,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:47:01,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:47:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:47:01,204 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 12 states. [2020-10-29 09:47:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:02,024 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-29 09:47:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:47:02,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-29 09:47:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:02,029 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:47:02,029 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:47:02,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:47:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:47:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-29 09:47:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 09:47:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-29 09:47:02,063 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 39 [2020-10-29 09:47:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:02,064 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-29 09:47:02,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:47:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-29 09:47:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:47:02,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:02,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:02,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:47:02,072 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:02,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1396962207, now seen corresponding path program 3 times [2020-10-29 09:47:02,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:02,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453300120] [2020-10-29 09:47:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:47:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:47:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 09:47:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:07,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:47:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 09:47:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:47:07,522 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2020-10-29 09:47:09,786 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-29 09:47:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:47:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:12,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:47:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:12,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:12,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:12,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:47:12,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:12,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:47:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:47:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:47:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:12,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:12,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:47:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:12,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:47:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:47:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:47:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:12,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:47:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:47:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 09:47:12,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453300120] [2020-10-29 09:47:12,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:12,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:47:12,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334105050] [2020-10-29 09:47:12,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:47:12,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:12,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:47:12,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=110, Unknown=1, NotChecked=0, Total=132 [2020-10-29 09:47:12,272 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 12 states. [2020-10-29 09:47:12,511 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-10-29 09:47:12,695 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-29 09:47:17,168 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-29 09:47:23,979 WARN L193 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-29 09:47:26,314 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-29 09:47:34,892 WARN L193 SmtUtils]: Spent 8.52 s on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-29 09:47:47,633 WARN L193 SmtUtils]: Spent 10.55 s on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-29 09:47:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:54,289 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-29 09:47:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:47:54,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-29 09:47:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:54,358 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:47:54,359 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:47:54,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=97, Invalid=453, Unknown=2, NotChecked=0, Total=552 [2020-10-29 09:47:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:47:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-29 09:47:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:47:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-29 09:47:54,380 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 47 [2020-10-29 09:47:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:54,381 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-29 09:47:54,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:47:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-29 09:47:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:47:54,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:54,382 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:54,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:47:54,383 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2060164822, now seen corresponding path program 4 times [2020-10-29 09:47:54,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:54,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011329946] [2020-10-29 09:47:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:59,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 09:47:59,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:47:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:47:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:48:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:48:02,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:48:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:48:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:48:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:48:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:48:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:48:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:48:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:02,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:48:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 09:48:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:02,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:02,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:48:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 58 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 09:48:02,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011329946] [2020-10-29 09:48:02,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:48:02,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:48:02,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982967241] [2020-10-29 09:48:02,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:48:02,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:48:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:48:02,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=130, Unknown=1, NotChecked=0, Total=156 [2020-10-29 09:48:02,184 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 13 states. [2020-10-29 09:48:04,555 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (div c_main_~j~0 4294967296))) (let ((.cse1 (+ c_main_~i~0 (* 8589934592 .cse2))) (.cse0 (* 2 c_main_~j~0))) (and (<= (+ c_main_~i~0 2) (+ .cse0 (* 4294967296 (div (+ c_main_~i~0 (- 3)) 4294967296)))) (<= 3 c_main_~j~0) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (<= .cse1 (+ .cse0 (* 4294967296 (div (+ c_main_~i~0 (* .cse2 8589934592) (- 3)) 4294967296)) 4)) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= c_~SIZE~0 |c_old(~SIZE~0)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (<= c_main_~j~0 3) (<= .cse1 (let ((.cse3 (div c_main_~i~0 4294967296))) (+ .cse0 (* 8589934592 (div (div (+ c_main_~i~0 (* .cse3 (- 4294967296))) 2) 4294967296)) (* 4294967296 .cse3) 1))) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string5.base| |c_old(#t~string5.base)|) (<= c_main_~j~0 6) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (<= .cse2 0) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (<= 0 .cse2)))) is different from false [2020-10-29 09:48:08,910 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (div c_main_~j~0 4294967296))) (let ((.cse0 (+ c_main_~i~0 (* 8589934592 .cse2))) (.cse1 (* 2 c_main_~j~0))) (and (<= 3 c_main_~j~0) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (<= .cse0 (+ .cse1 (* 4294967296 (div (+ c_main_~i~0 (* .cse2 8589934592) (- 3)) 4294967296)) 4)) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= c_~SIZE~0 |c_old(~SIZE~0)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (<= c_main_~j~0 3) (<= .cse0 (let ((.cse3 (div c_main_~i~0 4294967296))) (+ .cse1 (* 8589934592 (div (div (+ c_main_~i~0 (* .cse3 (- 4294967296))) 2) 4294967296)) (* 4294967296 .cse3) 1))) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string5.base| |c_old(#t~string5.base)|) (<= c_main_~j~0 6) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (<= 0 .cse2)))) is different from false [2020-10-29 09:48:15,289 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-29 09:48:17,566 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (div c_main_~j~0 4294967296))) (let ((.cse1 (+ c_main_~i~0 (* 8589934592 .cse2))) (.cse0 (* 2 c_main_~j~0))) (and (<= (+ c_main_~i~0 2) (+ .cse0 (* 4294967296 (div (+ c_main_~i~0 (- 3)) 4294967296)))) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (<= .cse1 (+ .cse0 (* 4294967296 (div (+ c_main_~i~0 (* .cse2 8589934592) (- 3)) 4294967296)) 4)) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= c_~SIZE~0 |c_old(~SIZE~0)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (<= .cse1 (let ((.cse3 (div c_main_~i~0 4294967296))) (+ .cse0 (* 8589934592 (div (div (+ c_main_~i~0 (* .cse3 (- 4294967296))) 2) 4294967296)) (* 4294967296 .cse3) 1))) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string5.base| |c_old(#t~string5.base)|) (<= c_main_~j~0 6) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (<= .cse2 0) (<= 6 c_main_~j~0) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (<= 0 .cse2)))) is different from false [2020-10-29 09:48:21,772 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 2 c_main_~j~0)) (.cse1 (div c_main_~j~0 4294967296))) (and (<= (+ c_main_~i~0 2) (+ .cse0 (* 4294967296 (div (+ c_main_~i~0 (- 3)) 4294967296)))) (<= c_main_~j~0 6) (<= .cse1 0) (<= 6 c_main_~j~0) (<= (+ c_main_~i~0 (* 8589934592 .cse1)) (let ((.cse2 (div c_main_~i~0 4294967296))) (+ .cse0 (* 8589934592 (div (div (+ c_main_~i~0 (* .cse2 (- 4294967296))) 2) 4294967296)) (* 4294967296 .cse2) 1))) (<= 0 .cse1))) is different from false [2020-10-29 09:48:23,873 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (div c_main_~j~0 4294967296))) (let ((.cse0 (+ c_main_~i~0 (* 8589934592 .cse2))) (.cse1 (* 2 c_main_~j~0))) (and (<= .cse0 (+ .cse1 (* 4294967296 (div (+ c_main_~i~0 (* .cse2 8589934592) (- 3)) 4294967296)) 4)) (<= c_main_~j~0 6) (<= 6 c_main_~j~0) (<= .cse0 (let ((.cse3 (div c_main_~i~0 4294967296))) (+ .cse1 (* 8589934592 (div (div (+ c_main_~i~0 (* .cse3 (- 4294967296))) 2) 4294967296)) (* 4294967296 .cse3) 1)))))) is different from false [2020-10-29 09:48:30,275 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-29 09:48:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:48:51,599 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-29 09:48:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:48:51,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-29 09:48:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:48:51,601 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:48:51,601 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:48:51,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=125, Invalid=637, Unknown=14, NotChecked=280, Total=1056 [2020-10-29 09:48:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:48:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-29 09:48:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 09:48:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-29 09:48:51,623 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 55 [2020-10-29 09:48:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:48:51,623 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-29 09:48:51,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:48:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-29 09:48:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:48:51,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:48:51,625 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:48:51,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:48:51,625 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:48:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:48:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash -637049231, now seen corresponding path program 5 times [2020-10-29 09:48:51,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:48:51,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785533012] [2020-10-29 09:48:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:48:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:48:56,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:48:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 09:48:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:48:57,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:48:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:48:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:48:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:48:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:48:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:48:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:48:57,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:57,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 09:48:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:48:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:48:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:48:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:48:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:48:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 78 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-29 09:48:57,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785533012] [2020-10-29 09:48:57,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:48:57,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:48:57,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885571421] [2020-10-29 09:48:57,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:48:57,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:48:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:48:57,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:48:57,761 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 15 states. [2020-10-29 09:48:57,974 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-29 09:48:58,311 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-29 09:49:40,126 WARN L193 SmtUtils]: Spent 41.70 s on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-29 09:49:40,560 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 09:50:49,510 WARN L193 SmtUtils]: Spent 1.14 m on a formula simplification. DAG size of input: 86 DAG size of output: 77