/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:23:47,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:23:47,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:23:47,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:23:47,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:23:47,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:23:47,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:23:47,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:23:47,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:23:47,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:23:47,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:23:47,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:23:47,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:23:47,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:23:47,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:23:47,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:23:47,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:23:47,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:23:47,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:23:47,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:23:47,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:23:47,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:23:47,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:23:47,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:23:47,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:23:47,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:23:47,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:23:47,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:23:47,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:23:47,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:23:47,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:23:47,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:23:47,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:23:47,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:23:47,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:23:47,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:23:47,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:23:47,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:23:47,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:23:47,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:23:47,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:23:47,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:23:47,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:23:47,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:23:47,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:23:47,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:23:47,989 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:23:47,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:23:47,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:23:47,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:23:47,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:23:47,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:23:47,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:23:47,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:23:47,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:23:47,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:23:47,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:23:47,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:23:47,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:23:47,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:23:47,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:23:47,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:23:47,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:23:47,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:23:47,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:23:47,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:23:47,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:23:47,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:23:47,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:23:47,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:23:47,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:23:47,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:23:48,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:23:48,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:23:48,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:23:48,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:23:48,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:23:48,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2020-10-29 08:23:48,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344efef3d/7dfaa1ae4eff4fff935820e1ef4731d8/FLAG41438eb7c [2020-10-29 08:23:49,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:23:49,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2020-10-29 08:23:49,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344efef3d/7dfaa1ae4eff4fff935820e1ef4731d8/FLAG41438eb7c [2020-10-29 08:23:50,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344efef3d/7dfaa1ae4eff4fff935820e1ef4731d8 [2020-10-29 08:23:50,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:23:50,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:23:50,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:23:50,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:23:50,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:23:50,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:23:50" (1/1) ... [2020-10-29 08:23:50,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2351fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:50, skipping insertion in model container [2020-10-29 08:23:50,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:23:50" (1/1) ... [2020-10-29 08:23:50,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:23:50,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:23:51,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:23:51,582 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:23:52,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:23:52,195 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:23:52,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52 WrapperNode [2020-10-29 08:23:52,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:23:52,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:23:52,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:23:52,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:23:52,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... [2020-10-29 08:23:52,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:23:52,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:23:52,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:23:52,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:23:52,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:23:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:23:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:23:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:23:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:23:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:23:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:23:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:23:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:23:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:23:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:23:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:23:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:23:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:23:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:23:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:23:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:24:02,209 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:24:02,209 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:24:02,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:24:02 BoogieIcfgContainer [2020-10-29 08:24:02,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:24:02,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:24:02,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:24:02,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:24:02,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:23:50" (1/3) ... [2020-10-29 08:24:02,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2803028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:24:02, skipping insertion in model container [2020-10-29 08:24:02,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:23:52" (2/3) ... [2020-10-29 08:24:02,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2803028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:24:02, skipping insertion in model container [2020-10-29 08:24:02,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:24:02" (3/3) ... [2020-10-29 08:24:02,223 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label50.c [2020-10-29 08:24:02,237 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:24:02,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:24:02,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:24:02,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:24:02,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:24:02,296 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:24:02,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:24:02,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:24:02,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:24:02,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:24:02,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:24:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:24:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 08:24:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:02,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:02,340 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1057896354, now seen corresponding path program 1 times [2020-10-29 08:24:02,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:02,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549442090] [2020-10-29 08:24:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:03,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:03,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 08:24:03,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-29 08:24:03,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:03,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 08:24:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:24:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:03,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:24:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:03,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:24:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549442090] [2020-10-29 08:24:03,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:24:03,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:24:03,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287122164] [2020-10-29 08:24:03,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:24:03,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:03,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:24:03,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:24:03,454 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:24:03,630 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:24:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:15,765 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:24:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:24:15,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-29 08:24:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:15,820 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:24:15,820 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:24:15,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:24:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:24:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:24:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:24:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:24:16,006 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 16 [2020-10-29 08:24:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:16,006 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:24:16,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:24:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:24:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 08:24:16,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:16,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:16,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:24:16,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1564549758, now seen corresponding path program 1 times [2020-10-29 08:24:16,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:16,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757328692] [2020-10-29 08:24:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:17,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 08:24:17,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-29 08:24:17,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:17,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:24:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:24:17,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:24:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:18,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:18,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:24:18,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:24:18,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:18,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:24:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:24:18,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757328692] [2020-10-29 08:24:18,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:24:18,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:24:18,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091929110] [2020-10-29 08:24:18,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:24:18,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:24:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:24:18,261 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:24:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:31,291 INFO L93 Difference]: Finished difference Result 2930 states and 4534 transitions. [2020-10-29 08:24:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:24:31,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-29 08:24:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:31,307 INFO L225 Difference]: With dead ends: 2930 [2020-10-29 08:24:31,307 INFO L226 Difference]: Without dead ends: 1933 [2020-10-29 08:24:31,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:24:31,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-10-29 08:24:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1902. [2020-10-29 08:24:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-29 08:24:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2466 transitions. [2020-10-29 08:24:31,436 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2466 transitions. Word has length 87 [2020-10-29 08:24:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:31,437 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2466 transitions. [2020-10-29 08:24:31,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:24:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2466 transitions. [2020-10-29 08:24:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 08:24:31,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:31,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:31,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:24:31,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash -262850737, now seen corresponding path program 1 times [2020-10-29 08:24:31,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:31,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250448237] [2020-10-29 08:24:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:31,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:32,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:24:32,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:32,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-29 08:24:32,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:32,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:32,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:24:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:24:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:32,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:32,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:24:32,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:32,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:24:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 08:24:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:32,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:24:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:24:32,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250448237] [2020-10-29 08:24:32,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:32,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:24:32,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850551993] [2020-10-29 08:24:32,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:24:32,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:24:32,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:24:32,764 INFO L87 Difference]: Start difference. First operand 1902 states and 2466 transitions. Second operand 8 states. [2020-10-29 08:24:34,407 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-29 08:24:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:54,865 INFO L93 Difference]: Finished difference Result 6129 states and 7877 transitions. [2020-10-29 08:24:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:24:54,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-29 08:24:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:54,893 INFO L225 Difference]: With dead ends: 6129 [2020-10-29 08:24:54,893 INFO L226 Difference]: Without dead ends: 3339 [2020-10-29 08:24:54,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:24:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-10-29 08:24:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3279. [2020-10-29 08:24:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3279 states. [2020-10-29 08:24:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4006 transitions. [2020-10-29 08:24:55,018 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4006 transitions. Word has length 90 [2020-10-29 08:24:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:55,019 INFO L481 AbstractCegarLoop]: Abstraction has 3279 states and 4006 transitions. [2020-10-29 08:24:55,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:24:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4006 transitions. [2020-10-29 08:24:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 08:24:55,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:55,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:55,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:24:55,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1090391767, now seen corresponding path program 1 times [2020-10-29 08:24:55,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:55,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082854920] [2020-10-29 08:24:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:56,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:24:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-29 08:24:56,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:56,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:24:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:24:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:56,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:24:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:56,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:56,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:24:56,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:56,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:56,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:24:56,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:24:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:56,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:24:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:24:56,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082854920] [2020-10-29 08:24:56,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:56,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:24:56,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55454122] [2020-10-29 08:24:56,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:24:56,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:24:56,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:24:56,898 INFO L87 Difference]: Start difference. First operand 3279 states and 4006 transitions. Second operand 7 states. [2020-10-29 08:25:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:13,838 INFO L93 Difference]: Finished difference Result 7981 states and 10229 transitions. [2020-10-29 08:25:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:25:13,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-29 08:25:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:13,876 INFO L225 Difference]: With dead ends: 7981 [2020-10-29 08:25:13,876 INFO L226 Difference]: Without dead ends: 5143 [2020-10-29 08:25:13,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2020-10-29 08:25:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5128. [2020-10-29 08:25:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5128 states. [2020-10-29 08:25:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 6284 transitions. [2020-10-29 08:25:14,068 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 6284 transitions. Word has length 173 [2020-10-29 08:25:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:14,071 INFO L481 AbstractCegarLoop]: Abstraction has 5128 states and 6284 transitions. [2020-10-29 08:25:14,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 6284 transitions. [2020-10-29 08:25:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 08:25:14,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:14,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:14,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:25:14,088 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash -6332550, now seen corresponding path program 1 times [2020-10-29 08:25:14,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:14,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011335430] [2020-10-29 08:25:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:19,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 08:25:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:25:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 08:25:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:25:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:25:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:25:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:19,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:19,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:19,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:25:19,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:19,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:25:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:19,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:19,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:19,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 08:25:19,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:19,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:25:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:25:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:19,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:19,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:25:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:25:20,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011335430] [2020-10-29 08:25:20,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:20,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:25:20,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400607136] [2020-10-29 08:25:20,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:25:20,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:20,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:25:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:25:20,163 INFO L87 Difference]: Start difference. First operand 5128 states and 6284 transitions. Second operand 10 states. [2020-10-29 08:25:20,386 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:25:25,711 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:25:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:42,397 INFO L93 Difference]: Finished difference Result 13213 states and 16921 transitions. [2020-10-29 08:25:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:25:42,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-10-29 08:25:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:42,445 INFO L225 Difference]: With dead ends: 13213 [2020-10-29 08:25:42,445 INFO L226 Difference]: Without dead ends: 8077 [2020-10-29 08:25:42,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:25:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8077 states. [2020-10-29 08:25:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8077 to 7965. [2020-10-29 08:25:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-29 08:25:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 9557 transitions. [2020-10-29 08:25:42,702 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 9557 transitions. Word has length 178 [2020-10-29 08:25:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:42,704 INFO L481 AbstractCegarLoop]: Abstraction has 7965 states and 9557 transitions. [2020-10-29 08:25:42,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:25:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 9557 transitions. [2020-10-29 08:25:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 08:25:42,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:42,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:42,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:25:42,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:42,711 INFO L82 PathProgramCache]: Analyzing trace with hash 274633648, now seen corresponding path program 1 times [2020-10-29 08:25:42,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:42,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837819090] [2020-10-29 08:25:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 08:25:43,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:25:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:44,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:44,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:44,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:25:44,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:44,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:44,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:25:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:44,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:44,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:44,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:25:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:25:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 08:25:44,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:44,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:25:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 08:25:44,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837819090] [2020-10-29 08:25:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:25:44,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520163759] [2020-10-29 08:25:44,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:25:44,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:44,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:25:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:25:44,695 INFO L87 Difference]: Start difference. First operand 7965 states and 9557 transitions. Second operand 6 states. [2020-10-29 08:26:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:00,113 INFO L93 Difference]: Finished difference Result 15506 states and 18688 transitions. [2020-10-29 08:26:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:26:00,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-10-29 08:26:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:00,181 INFO L225 Difference]: With dead ends: 15506 [2020-10-29 08:26:00,184 INFO L226 Difference]: Without dead ends: 7982 [2020-10-29 08:26:00,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:26:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7982 states. [2020-10-29 08:26:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7982 to 7965. [2020-10-29 08:26:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-29 08:26:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 9536 transitions. [2020-10-29 08:26:00,498 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 9536 transitions. Word has length 189 [2020-10-29 08:26:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:00,499 INFO L481 AbstractCegarLoop]: Abstraction has 7965 states and 9536 transitions. [2020-10-29 08:26:00,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:26:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 9536 transitions. [2020-10-29 08:26:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 08:26:00,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:00,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:00,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:26:00,506 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:00,507 INFO L82 PathProgramCache]: Analyzing trace with hash -601215508, now seen corresponding path program 1 times [2020-10-29 08:26:00,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:00,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555666581] [2020-10-29 08:26:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:05,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:05,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-29 08:26:05,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:26:05,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-29 08:26:05,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:05,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:26:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:26:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:26:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:05,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:26:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:05,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:26:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:06,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:06,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:06,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:26:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 08:26:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:06,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:26:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:26:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:26:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:26:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 08:26:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:06,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:26:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:26:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:26:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:06,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:06,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:26:06,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:26:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 85 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:26:07,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555666581] [2020-10-29 08:26:07,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:26:07,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:26:07,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030792158] [2020-10-29 08:26:07,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:26:07,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:26:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:26:07,104 INFO L87 Difference]: Start difference. First operand 7965 states and 9536 transitions. Second operand 10 states. [2020-10-29 08:26:07,280 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:26:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:36,910 INFO L93 Difference]: Finished difference Result 21704 states and 28212 transitions. [2020-10-29 08:26:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 08:26:36,913 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 264 [2020-10-29 08:26:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:36,996 INFO L225 Difference]: With dead ends: 21704 [2020-10-29 08:26:36,996 INFO L226 Difference]: Without dead ends: 13697 [2020-10-29 08:26:37,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-29 08:26:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13697 states. [2020-10-29 08:26:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13697 to 13481. [2020-10-29 08:26:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13481 states. [2020-10-29 08:26:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 16444 transitions. [2020-10-29 08:26:37,608 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 16444 transitions. Word has length 264 [2020-10-29 08:26:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:37,609 INFO L481 AbstractCegarLoop]: Abstraction has 13481 states and 16444 transitions. [2020-10-29 08:26:37,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:26:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 16444 transitions. [2020-10-29 08:26:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-29 08:26:37,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:37,615 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:37,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:26:37,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1668144648, now seen corresponding path program 1 times [2020-10-29 08:26:37,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:37,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639260610] [2020-10-29 08:26:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 08:26:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:26:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3692 [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:26:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:26:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:41,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:26:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:26:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:41,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:26:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:26:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:41,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:26:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:26:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:26:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 08:26:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:42,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:26:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:26:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:42,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:42,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:26:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:26:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 172 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:26:42,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639260610] [2020-10-29 08:26:42,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:26:42,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:26:42,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235722710] [2020-10-29 08:26:42,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:26:42,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:42,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:26:42,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:26:42,522 INFO L87 Difference]: Start difference. First operand 13481 states and 16444 transitions. Second operand 7 states. [2020-10-29 08:26:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:57,580 INFO L93 Difference]: Finished difference Result 27850 states and 34827 transitions. [2020-10-29 08:26:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:26:57,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-29 08:26:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:57,642 INFO L225 Difference]: With dead ends: 27850 [2020-10-29 08:26:57,642 INFO L226 Difference]: Without dead ends: 14810 [2020-10-29 08:26:57,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:26:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14810 states. [2020-10-29 08:26:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14810 to 13481. [2020-10-29 08:26:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13481 states. [2020-10-29 08:26:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 16444 transitions. [2020-10-29 08:26:58,028 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 16444 transitions. Word has length 266 [2020-10-29 08:26:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:58,029 INFO L481 AbstractCegarLoop]: Abstraction has 13481 states and 16444 transitions. [2020-10-29 08:26:58,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:26:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 16444 transitions. [2020-10-29 08:26:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 08:26:58,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:58,035 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:58,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:26:58,036 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:58,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1294516233, now seen corresponding path program 1 times [2020-10-29 08:26:58,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:58,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899378691] [2020-10-29 08:26:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:03,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 08:27:03,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:27:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:27:03,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:03,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-29 08:27:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:27:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:03,357 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:27:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:03,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:03,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:27:03,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:03,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:27:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:27:03,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:27:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:27:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:27:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:27:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:27:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:27:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:27:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 08:27:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:03,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:27:03,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:27:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:27:04,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899378691] [2020-10-29 08:27:04,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:27:04,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:27:04,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142409868] [2020-10-29 08:27:04,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:27:04,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:27:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:27:04,162 INFO L87 Difference]: Start difference. First operand 13481 states and 16444 transitions. Second operand 7 states. [2020-10-29 08:27:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:25,218 INFO L93 Difference]: Finished difference Result 32484 states and 40642 transitions. [2020-10-29 08:27:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:27:25,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-29 08:27:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:25,290 INFO L225 Difference]: With dead ends: 32484 [2020-10-29 08:27:25,290 INFO L226 Difference]: Without dead ends: 18008 [2020-10-29 08:27:25,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:27:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18008 states. [2020-10-29 08:27:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18008 to 17899. [2020-10-29 08:27:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17899 states. [2020-10-29 08:27:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17899 states to 17899 states and 21559 transitions. [2020-10-29 08:27:25,766 INFO L78 Accepts]: Start accepts. Automaton has 17899 states and 21559 transitions. Word has length 285 [2020-10-29 08:27:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:27:25,767 INFO L481 AbstractCegarLoop]: Abstraction has 17899 states and 21559 transitions. [2020-10-29 08:27:25,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:27:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 17899 states and 21559 transitions. [2020-10-29 08:27:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 08:27:25,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:25,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:27:25,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:27:25,776 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:25,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1549130035, now seen corresponding path program 1 times [2020-10-29 08:27:25,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:25,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98494473] [2020-10-29 08:27:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking...