/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=SHALLOWEST --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/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 03:57:36,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 03:57:36,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 03:57:36,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 03:57:36,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 03:57:36,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 03:57:36,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 03:57:36,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 03:57:36,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 03:57:36,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 03:57:36,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 03:57:36,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 03:57:36,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 03:57:36,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 03:57:36,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 03:57:36,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 03:57:36,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 03:57:36,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 03:57:36,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 03:57:36,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 03:57:36,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 03:57:36,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 03:57:36,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 03:57:36,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 03:57:36,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 03:57:36,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 03:57:36,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 03:57:36,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 03:57:36,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 03:57:36,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 03:57:36,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 03:57:36,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 03:57:36,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 03:57:36,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 03:57:36,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 03:57:36,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 03:57:36,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 03:57:36,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 03:57:36,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 03:57:36,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 03:57:36,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 03:57:36,248 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 [2020-10-27 03:57:36,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 03:57:36,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 03:57:36,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 03:57:36,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 03:57:36,312 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 03:57:36,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 03:57:36,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 03:57:36,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 03:57:36,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 03:57:36,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 03:57:36,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 03:57:36,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 03:57:36,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 03:57:36,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 03:57:36,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 03:57:36,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 03:57:36,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 03:57:36,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 03:57:36,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 03:57:36,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 03:57:36,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 03:57:36,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 03:57:36,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 03:57:36,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 03:57:36,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 03:57:36,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 03:57:36,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 03:57:36,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 03:57:36,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 03:57:36,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 03:57:36,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 03:57:36,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 03:57:36,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 03:57:36,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 03:57:36,835 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 03:57:36,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-27 03:57:36,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2efd90492/ff0926a482194fcca4ddfb50a0c40b71/FLAG1098269c3 [2020-10-27 03:57:37,591 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 03:57:37,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-27 03:57:37,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2efd90492/ff0926a482194fcca4ddfb50a0c40b71/FLAG1098269c3 [2020-10-27 03:57:37,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2efd90492/ff0926a482194fcca4ddfb50a0c40b71 [2020-10-27 03:57:37,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 03:57:37,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 03:57:37,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 03:57:37,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 03:57:37,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 03:57:37,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:57:37" (1/1) ... [2020-10-27 03:57:37,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1219ad88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:37, skipping insertion in model container [2020-10-27 03:57:37,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:57:37" (1/1) ... [2020-10-27 03:57:37,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 03:57:38,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 03:57:38,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:57:38,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 03:57:38,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:57:38,219 INFO L208 MainTranslator]: Completed translation [2020-10-27 03:57:38,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38 WrapperNode [2020-10-27 03:57:38,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 03:57:38,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 03:57:38,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 03:57:38,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 03:57:38,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (1/1) ... [2020-10-27 03:57:38,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 03:57:38,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 03:57:38,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 03:57:38,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 03:57:38,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (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 [2020-10-27 03:57:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 03:57:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 03:57:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 03:57:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-27 03:57:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 03:57:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 03:57:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 03:57:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 03:57:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 03:57:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 03:57:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-27 03:57:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 03:57:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 03:57:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 03:57:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 03:57:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 03:57:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 03:57:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 03:57:38,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 03:57:38,598 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 03:57:38,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:57:38 BoogieIcfgContainer [2020-10-27 03:57:38,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 03:57:38,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 03:57:38,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 03:57:38,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 03:57:38,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:57:37" (1/3) ... [2020-10-27 03:57:38,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574695f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:57:38, skipping insertion in model container [2020-10-27 03:57:38,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:38" (2/3) ... [2020-10-27 03:57:38,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574695f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:57:38, skipping insertion in model container [2020-10-27 03:57:38,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:57:38" (3/3) ... [2020-10-27 03:57:38,614 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-10-27 03:57:38,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 03:57:38,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 03:57:38,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 03:57:38,680 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 03:57:38,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 03:57:38,681 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 03:57:38,681 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 03:57:38,681 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 03:57:38,681 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 03:57:38,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 03:57:38,682 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 03:57:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-27 03:57:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 03:57:38,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:38,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:38,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:38,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2107265492, now seen corresponding path program 1 times [2020-10-27 03:57:38,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:38,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598762954] [2020-10-27 03:57:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:39,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 03:57:39,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 03:57:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 03:57:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:57:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 03:57:39,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:39,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:39,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 03:57:39,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:39,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:39,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 03:57:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 03:57:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:57:39,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598762954] [2020-10-27 03:57:39,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:57:39,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 03:57:39,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364104978] [2020-10-27 03:57:39,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 03:57:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 03:57:39,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 03:57:39,579 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-27 03:57:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:39,861 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-27 03:57:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 03:57:39,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 03:57:39,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:39,873 INFO L225 Difference]: With dead ends: 41 [2020-10-27 03:57:39,874 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 03:57:39,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:57:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 03:57:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 03:57:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 03:57:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 03:57:39,930 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2020-10-27 03:57:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:39,930 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 03:57:39,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 03:57:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 03:57:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 03:57:39,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:39,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:39,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 03:57:39,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1001048603, now seen corresponding path program 1 times [2020-10-27 03:57:39,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:39,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780424774] [2020-10-27 03:57:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 03:57:40,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 03:57:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 03:57:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 03:57:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:40,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:40,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 03:57:40,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:40,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:40,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 03:57:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 03:57:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:57:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:57:40,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780424774] [2020-10-27 03:57:40,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:57:40,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 03:57:40,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715392508] [2020-10-27 03:57:40,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 03:57:40,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:40,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 03:57:40,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 03:57:40,205 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-10-27 03:57:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:40,463 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-27 03:57:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 03:57:40,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 03:57:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:40,466 INFO L225 Difference]: With dead ends: 30 [2020-10-27 03:57:40,466 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 03:57:40,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:57:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 03:57:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-27 03:57:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 03:57:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 03:57:40,477 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-27 03:57:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:40,477 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 03:57:40,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 03:57:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 03:57:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 03:57:40,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:40,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:40,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 03:57:40,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -768223736, now seen corresponding path program 1 times [2020-10-27 03:57:40,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:40,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895152467] [2020-10-27 03:57:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:40,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 03:57:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:57:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-27 03:57:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 03:57:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:41,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:57:41,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:41,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 03:57:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 03:57:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:57:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:57:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:41,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 03:57:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 03:57:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:41,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:41,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:41,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 03:57:41,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:57:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:57:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 03:57:41,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895152467] [2020-10-27 03:57:41,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:57:41,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 03:57:41,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141061408] [2020-10-27 03:57:41,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 03:57:41,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:41,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 03:57:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 03:57:41,583 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 8 states. [2020-10-27 03:57:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:41,981 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-10-27 03:57:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 03:57:41,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 03:57:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:41,986 INFO L225 Difference]: With dead ends: 50 [2020-10-27 03:57:41,986 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 03:57:41,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 03:57:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 03:57:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 03:57:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 03:57:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-27 03:57:42,009 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 28 [2020-10-27 03:57:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:42,010 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-27 03:57:42,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 03:57:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-27 03:57:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 03:57:42,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:42,014 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:42,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 03:57:42,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1973821333, now seen corresponding path program 1 times [2020-10-27 03:57:42,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:42,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109446030] [2020-10-27 03:57:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 03:57:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:42,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:42,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:42,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:57:42,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:42,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:57:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 03:57:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 03:57:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:57:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:57:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:57:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:42,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:57:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:57:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 03:57:42,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109446030] [2020-10-27 03:57:42,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:57:42,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 03:57:42,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791142518] [2020-10-27 03:57:42,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 03:57:42,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 03:57:42,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 03:57:42,689 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-10-27 03:57:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:43,184 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-10-27 03:57:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 03:57:43,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 03:57:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:43,186 INFO L225 Difference]: With dead ends: 38 [2020-10-27 03:57:43,186 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 03:57:43,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 03:57:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 03:57:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-27 03:57:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 03:57:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-27 03:57:43,197 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 29 [2020-10-27 03:57:43,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:43,198 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-27 03:57:43,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 03:57:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-27 03:57:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 03:57:43,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:43,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:43,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 03:57:43,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1325220322, now seen corresponding path program 1 times [2020-10-27 03:57:43,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:43,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684478122] [2020-10-27 03:57:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:43,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 03:57:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 03:57:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-27 03:57:43,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 03:57:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:43,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:43,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:43,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:57:43,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 03:57:43,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 03:57:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 03:57:43,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 03:57:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:57:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:43,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:43,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 03:57:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:57:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:44,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:57:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 03:57:44,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684478122] [2020-10-27 03:57:44,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:57:44,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 03:57:44,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762251310] [2020-10-27 03:57:44,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 03:57:44,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 03:57:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 03:57:44,025 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 7 states. [2020-10-27 03:57:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:44,349 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-10-27 03:57:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 03:57:44,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-27 03:57:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:44,353 INFO L225 Difference]: With dead ends: 45 [2020-10-27 03:57:44,353 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 03:57:44,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:57:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 03:57:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2020-10-27 03:57:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 03:57:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-10-27 03:57:44,366 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 30 [2020-10-27 03:57:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:44,367 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-10-27 03:57:44,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 03:57:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-10-27 03:57:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 03:57:44,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:44,370 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:44,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 03:57:44,370 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:44,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -38740789, now seen corresponding path program 2 times [2020-10-27 03:57:44,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:44,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639594033] [2020-10-27 03:57:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:48,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 03:57:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 03:57:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3753 [2020-10-27 03:57:48,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 03:57:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:48,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:48,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:49,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 03:57:49,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 03:57:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1446 [2020-10-27 03:57:49,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:57:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 03:57:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:57:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 03:57:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:57:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 03:57:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:57:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:57:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:57:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:49,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:49,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:57:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 03:57:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:49,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:49,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:49,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:57:49,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:57:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:57:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 03:57:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:57:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 03:57:49,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639594033] [2020-10-27 03:57:49,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:57:49,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 03:57:49,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208260892] [2020-10-27 03:57:49,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:57:49,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:49,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:57:49,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:57:49,941 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 9 states. [2020-10-27 03:57:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:50,481 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2020-10-27 03:57:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:57:50,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-27 03:57:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:50,487 INFO L225 Difference]: With dead ends: 82 [2020-10-27 03:57:50,487 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 03:57:50,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:57:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 03:57:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-10-27 03:57:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 03:57:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-10-27 03:57:50,514 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 42 [2020-10-27 03:57:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:50,515 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-10-27 03:57:50,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:57:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-10-27 03:57:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 03:57:50,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:50,521 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:50,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 03:57:50,522 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1230620678, now seen corresponding path program 3 times [2020-10-27 03:57:50,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:50,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801740115] [2020-10-27 03:57:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:55,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 03:57:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:57:55,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:57:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 03:58:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 03:58:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 03:58:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 03:58:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:00,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 03:58:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 03:58:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 03:58:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 03:58:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:00,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 46 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-27 03:58:00,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801740115] [2020-10-27 03:58:00,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:00,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 03:58:00,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779412390] [2020-10-27 03:58:00,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:58:00,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:00,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:58:00,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:58:00,893 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 9 states. [2020-10-27 03:58:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:01,386 INFO L93 Difference]: Finished difference Result 112 states and 172 transitions. [2020-10-27 03:58:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:58:01,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 03:58:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:01,390 INFO L225 Difference]: With dead ends: 112 [2020-10-27 03:58:01,390 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 03:58:01,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:58:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 03:58:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2020-10-27 03:58:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 03:58:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2020-10-27 03:58:01,407 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 56 [2020-10-27 03:58:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:01,408 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2020-10-27 03:58:01,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:58:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2020-10-27 03:58:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 03:58:01,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:01,410 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:01,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 03:58:01,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:01,411 INFO L82 PathProgramCache]: Analyzing trace with hash -86602927, now seen corresponding path program 4 times [2020-10-27 03:58:01,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:01,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559140266] [2020-10-27 03:58:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 03:58:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 03:58:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 03:58:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:58:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 03:58:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 03:58:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 03:58:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:58:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:08,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 54 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-27 03:58:08,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559140266] [2020-10-27 03:58:08,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:08,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 03:58:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162723330] [2020-10-27 03:58:08,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:58:08,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:58:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:58:08,139 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand 9 states. [2020-10-27 03:58:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:08,573 INFO L93 Difference]: Finished difference Result 165 states and 283 transitions. [2020-10-27 03:58:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 03:58:08,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-27 03:58:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:08,579 INFO L225 Difference]: With dead ends: 165 [2020-10-27 03:58:08,579 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 03:58:08,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-27 03:58:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 03:58:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2020-10-27 03:58:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 03:58:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 167 transitions. [2020-10-27 03:58:08,631 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 167 transitions. Word has length 57 [2020-10-27 03:58:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:08,632 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 167 transitions. [2020-10-27 03:58:08,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:58:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 167 transitions. [2020-10-27 03:58:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 03:58:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:08,636 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:08,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 03:58:08,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1624102658, now seen corresponding path program 5 times [2020-10-27 03:58:08,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:08,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891623526] [2020-10-27 03:58:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 03:58:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:13,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:58:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:18,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 03:58:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:58:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 03:58:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 03:58:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 03:58:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 03:58:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:20,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 03:58:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 03:58:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-27 03:58:20,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 03:58:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:20,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:20,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:20,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:58:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 03:58:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:20,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:20,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 03:58:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:20,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:20,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 03:58:20,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 03:58:20,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 03:58:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:21,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 03:58:21,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 03:58:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:21,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 03:58:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:21,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 03:58:21,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:58:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 03:58:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:21,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:21,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:58:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 84 proven. 115 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 03:58:21,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891623526] [2020-10-27 03:58:21,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:21,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 03:58:21,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558987028] [2020-10-27 03:58:21,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 03:58:21,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 03:58:21,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:58:21,653 INFO L87 Difference]: Start difference. First operand 100 states and 167 transitions. Second operand 17 states. [2020-10-27 03:58:22,648 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-27 03:58:22,818 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-27 03:58:22,974 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-27 03:58:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:23,204 INFO L93 Difference]: Finished difference Result 160 states and 287 transitions. [2020-10-27 03:58:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 03:58:23,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 03:58:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:23,214 INFO L225 Difference]: With dead ends: 160 [2020-10-27 03:58:23,214 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 03:58:23,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2020-10-27 03:58:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 03:58:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-27 03:58:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 03:58:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-27 03:58:23,228 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 82 [2020-10-27 03:58:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:23,229 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-27 03:58:23,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 03:58:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-27 03:58:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 03:58:23,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:23,230 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:23,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 03:58:23,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:23,233 INFO L82 PathProgramCache]: Analyzing trace with hash -217233873, now seen corresponding path program 6 times [2020-10-27 03:58:23,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:23,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738923725] [2020-10-27 03:58:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 03:58:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:28,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:28,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:58:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:28,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 03:58:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 03:58:33,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:58:33,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 03:58:33,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 03:58:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 03:58:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:33,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 03:58:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:33,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 03:58:33,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738923725] [2020-10-27 03:58:33,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:33,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 03:58:33,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048015928] [2020-10-27 03:58:33,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:58:33,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:58:33,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:58:33,759 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 9 states. [2020-10-27 03:58:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:34,298 INFO L93 Difference]: Finished difference Result 105 states and 149 transitions. [2020-10-27 03:58:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:58:34,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-27 03:58:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:34,305 INFO L225 Difference]: With dead ends: 105 [2020-10-27 03:58:34,305 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 03:58:34,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:58:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 03:58:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-10-27 03:58:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 03:58:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 133 transitions. [2020-10-27 03:58:34,330 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 133 transitions. Word has length 70 [2020-10-27 03:58:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:34,331 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 133 transitions. [2020-10-27 03:58:34,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:58:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 133 transitions. [2020-10-27 03:58:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 03:58:34,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:34,332 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:34,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 03:58:34,336 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1104191008, now seen corresponding path program 7 times [2020-10-27 03:58:34,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:34,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050817393] [2020-10-27 03:58:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 03:58:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:39,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 03:58:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 03:58:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 03:58:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 03:58:44,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:49,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 03:58:49,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 03:58:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 03:58:49,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 03:58:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 03:58:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 03:58:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 03:58:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:50,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:50,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:58:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 03:58:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 03:58:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:58:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:50,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 03:58:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 03:58:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 03:58:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 03:58:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 03:58:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:58:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 123 proven. 158 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-27 03:58:50,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050817393] [2020-10-27 03:58:50,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:50,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 03:58:50,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105590967] [2020-10-27 03:58:50,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 03:58:50,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:50,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 03:58:50,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-27 03:58:50,572 INFO L87 Difference]: Start difference. First operand 92 states and 133 transitions. Second operand 20 states. [2020-10-27 03:58:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:51,969 INFO L93 Difference]: Finished difference Result 144 states and 213 transitions. [2020-10-27 03:58:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 03:58:51,971 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-10-27 03:58:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:51,973 INFO L225 Difference]: With dead ends: 144 [2020-10-27 03:58:51,973 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 03:58:51,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 03:58:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 03:58:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-27 03:58:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 03:58:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-27 03:58:51,985 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 97 [2020-10-27 03:58:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:51,986 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-27 03:58:51,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 03:58:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-27 03:58:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 03:58:51,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:51,987 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:51,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 03:58:51,988 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:51,988 INFO L82 PathProgramCache]: Analyzing trace with hash -667659703, now seen corresponding path program 8 times [2020-10-27 03:58:51,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:51,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945590569] [2020-10-27 03:58:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 03:58:52,004 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 03:58:52,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 03:58:52,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 03:58:52,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:58:52 BoogieIcfgContainer [2020-10-27 03:58:52,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 03:58:52,052 INFO L168 Benchmark]: Toolchain (without parser) took 74095.17 ms. Allocated memory was 153.1 MB in the beginning and 562.0 MB in the end (delta: 408.9 MB). Free memory was 128.9 MB in the beginning and 219.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 319.4 MB. Max. memory is 8.0 GB. [2020-10-27 03:58:52,053 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 85.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 03:58:52,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 03:58:52,054 INFO L168 Benchmark]: Boogie Preprocessor took 35.28 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 03:58:52,055 INFO L168 Benchmark]: RCFGBuilder took 343.28 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 104.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 03:58:52,056 INFO L168 Benchmark]: TraceAbstraction took 73448.41 ms. Allocated memory was 153.1 MB in the beginning and 562.0 MB in the end (delta: 408.9 MB). Free memory was 104.1 MB in the beginning and 219.2 MB in the end (delta: -115.1 MB). Peak memory consumption was 295.3 MB. Max. memory is 8.0 GB. [2020-10-27 03:58:52,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 85.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.28 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 343.28 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 104.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 73448.41 ms. Allocated memory was 153.1 MB in the beginning and 562.0 MB in the end (delta: 408.9 MB). Free memory was 104.1 MB in the beginning and 219.2 MB in the end (delta: -115.1 MB). Peak memory consumption was 295.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int x = __VERIFIER_nondet_int(); [L31] CALL, EXPR fibonacci(x) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L31] RET, EXPR fibonacci(x) [L31] int result = fibonacci(x); [L32] COND FALSE !(x != 5 || result == 3) [L35] CALL reach_error() [L3] __assert_fail("0", "Fibonacci04.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 73.3s, OverallIterations: 12, TraceHistogramMax: 15, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 487 SDslu, 287 SDs, 0 SdLazy, 1394 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 62 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 65.7s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 511 ConstructedInterpolants, 0 QuantifiedInterpolants, 88423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 713/1191 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...