/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:19:55,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:19:55,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:19:55,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:19:55,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:19:55,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:19:55,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:19:55,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:19:55,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:19:55,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:19:55,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:19:55,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:19:55,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:19:55,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:19:55,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:19:55,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:19:55,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:19:55,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:19:55,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:19:55,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:19:55,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:19:55,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:19:55,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:19:55,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:19:55,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:19:55,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:19:55,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:19:55,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:19:55,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:19:55,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:19:55,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:19:55,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:19:55,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:19:55,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:19:55,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:19:55,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:19:55,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:19:55,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:19:55,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:19:55,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:19:55,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:19:55,996 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 08:19:56,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:19:56,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:19:56,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:19:56,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:19:56,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:19:56,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:19:56,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:19:56,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:19:56,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:19:56,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:19:56,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:19:56,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:19:56,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:19:56,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:19:56,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:19:56,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:19:56,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:19:56,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:19:56,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:19:56,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:19:56,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:19:56,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:19:56,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:19:56,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:19:56,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:19:56,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:19:56,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:19:56,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:19:56,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:19:56,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:19:56,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:19:56,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:19:56,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:19:56,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:19:56,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:19:56,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37.c [2020-10-29 08:19:56,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7380f08/a7ff78d045ed417b9dca6905d617abe9/FLAGe06bd832d [2020-10-29 08:19:57,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:19:57,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label37.c [2020-10-29 08:19:57,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7380f08/a7ff78d045ed417b9dca6905d617abe9/FLAGe06bd832d [2020-10-29 08:19:58,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7380f08/a7ff78d045ed417b9dca6905d617abe9 [2020-10-29 08:19:58,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:19:58,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:19:58,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:19:58,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:19:58,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:19:58,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:19:58" (1/1) ... [2020-10-29 08:19:58,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29916ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:58, skipping insertion in model container [2020-10-29 08:19:58,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:19:58" (1/1) ... [2020-10-29 08:19:58,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:19:58,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:19:59,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:19:59,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:19:59,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:19:59,887 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:19:59,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59 WrapperNode [2020-10-29 08:19:59,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:19:59,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:19:59,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:19:59,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:19:59,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:19:59,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:19:59,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:19:59,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:20:00,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:20:00,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:20:00,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (1/1) ... [2020-10-29 08:20:00,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:20:00,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:20:00,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:20:00,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:20:00,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (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 08:20:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:20:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:20:00,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:20:00,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:20:00,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:20:00,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:20:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:20:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:20:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:20:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:20:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:20:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:20:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:20:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:20:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:20:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:20:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:20:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:20:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:20:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:20:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:20:10,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:20:10,195 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:20:10,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:20:10 BoogieIcfgContainer [2020-10-29 08:20:10,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:20:10,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:20:10,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:20:10,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:20:10,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:19:58" (1/3) ... [2020-10-29 08:20:10,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f543b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:20:10, skipping insertion in model container [2020-10-29 08:20:10,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:19:59" (2/3) ... [2020-10-29 08:20:10,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f543b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:20:10, skipping insertion in model container [2020-10-29 08:20:10,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:20:10" (3/3) ... [2020-10-29 08:20:10,209 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label37.c [2020-10-29 08:20:10,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:20:10,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:20:10,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:20:10,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:20:10,280 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:20:10,280 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:20:10,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:20:10,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:20:10,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:20:10,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:20:10,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:20:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:20:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 08:20:10,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:10,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:10,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:10,329 INFO L82 PathProgramCache]: Analyzing trace with hash 452507635, now seen corresponding path program 1 times [2020-10-29 08:20:10,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:10,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468468168] [2020-10-29 08:20:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:11,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 08:20:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-29 08:20:11,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:11,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:20:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 08:20:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:20:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:11,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:11,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:11,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 08:20:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:11,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:11,542 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 08:20:11,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468468168] [2020-10-29 08:20:11,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:20:11,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:20:11,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992524893] [2020-10-29 08:20:11,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:20:11,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:20:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:20:11,574 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:20:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:25,806 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:20:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:20:25,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-29 08:20:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:25,861 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:20:25,861 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:20:25,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:20:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:20:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:20:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:20:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:20:26,015 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 25 [2020-10-29 08:20:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:26,016 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:20:26,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:20:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:20:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 08:20:26,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:26,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:26,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:20:26,022 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash -937647150, now seen corresponding path program 1 times [2020-10-29 08:20:26,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:26,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038151428] [2020-10-29 08:20:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:20:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:20:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-29 08:20:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:20:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:20:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:20:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:27,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:20:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:27,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:20:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:28,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:20:28,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:20:28,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:20:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:20:28,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038151428] [2020-10-29 08:20:28,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:20:28,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:20:28,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405721913] [2020-10-29 08:20:28,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:20:28,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:28,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:20:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:20:28,244 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:20:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:44,454 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-29 08:20:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:20:44,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-29 08:20:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:44,468 INFO L225 Difference]: With dead ends: 2964 [2020-10-29 08:20:44,468 INFO L226 Difference]: Without dead ends: 1967 [2020-10-29 08:20:44,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:20:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-29 08:20:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-29 08:20:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-29 08:20:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-29 08:20:44,581 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 96 [2020-10-29 08:20:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:44,583 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-29 08:20:44,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:20:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-29 08:20:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 08:20:44,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:44,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:44,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:20:44,597 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1150236473, now seen corresponding path program 1 times [2020-10-29 08:20:44,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:44,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407024821] [2020-10-29 08:20:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:44,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:44,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:20:44,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 08:20:44,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:45,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:20:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:45,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:45,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:20:45,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:45,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:45,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:45,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:20:45,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:20:45,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:45,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:20:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:20:45,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407024821] [2020-10-29 08:20:45,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:45,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:20:45,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151086763] [2020-10-29 08:20:45,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:20:45,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:20:45,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:20:45,374 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 5 states. [2020-10-29 08:21:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:00,252 INFO L93 Difference]: Finished difference Result 4732 states and 6292 transitions. [2020-10-29 08:21:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:21:00,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-29 08:21:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:00,274 INFO L225 Difference]: With dead ends: 4732 [2020-10-29 08:21:00,275 INFO L226 Difference]: Without dead ends: 2377 [2020-10-29 08:21:00,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:21:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-29 08:21:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-29 08:21:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-29 08:21:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2901 transitions. [2020-10-29 08:21:00,395 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2901 transitions. Word has length 99 [2020-10-29 08:21:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:00,398 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2901 transitions. [2020-10-29 08:21:00,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:21:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2901 transitions. [2020-10-29 08:21:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 08:21:00,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:00,409 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 08:21:00,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:21:00,410 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 802535767, now seen corresponding path program 1 times [2020-10-29 08:21:00,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:00,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911979390] [2020-10-29 08:21:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:01,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:01,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:01,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:21:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:02,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:02,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:02,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:02,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:02,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:21:02,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:02,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:02,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 08:21:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:21:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:02,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:02,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:21:02,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 08:21:02,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:02,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:21:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:21:02,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911979390] [2020-10-29 08:21:02,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:02,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:21:02,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777341682] [2020-10-29 08:21:02,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:21:02,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:21:02,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:21:02,585 INFO L87 Difference]: Start difference. First operand 2358 states and 2901 transitions. Second operand 7 states. [2020-10-29 08:21:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:17,739 INFO L93 Difference]: Finished difference Result 6080 states and 7748 transitions. [2020-10-29 08:21:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:21:17,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-29 08:21:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:17,772 INFO L225 Difference]: With dead ends: 6080 [2020-10-29 08:21:17,772 INFO L226 Difference]: Without dead ends: 3728 [2020-10-29 08:21:17,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:21:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2020-10-29 08:21:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3720. [2020-10-29 08:21:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-10-29 08:21:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 4554 transitions. [2020-10-29 08:21:17,933 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 4554 transitions. Word has length 185 [2020-10-29 08:21:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:17,936 INFO L481 AbstractCegarLoop]: Abstraction has 3720 states and 4554 transitions. [2020-10-29 08:21:17,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:21:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 4554 transitions. [2020-10-29 08:21:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 08:21:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:17,940 INFO L422 BasicCegarLoop]: trace histogram [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, 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 08:21:17,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:21:17,941 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash -472398789, now seen corresponding path program 1 times [2020-10-29 08:21:17,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:17,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779089509] [2020-10-29 08:21:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:23,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:23,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 08:21:23,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:21:23,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:21:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:23,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:23,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:23,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:21:23,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:23,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:23,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:23,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:23,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:21:23,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:23,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:23,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:23,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:23,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 08:21:23,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:23,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:21:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:21:23,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:23,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:23,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:21:23,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:21:23,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:23,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 103 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:21:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779089509] [2020-10-29 08:21:23,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:23,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:21:23,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390457370] [2020-10-29 08:21:23,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:21:23,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:23,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:21:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:21:23,971 INFO L87 Difference]: Start difference. First operand 3720 states and 4554 transitions. Second operand 10 states. [2020-10-29 08:21:24,924 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-29 08:21:30,274 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-29 08:22:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:03,999 INFO L93 Difference]: Finished difference Result 13118 states and 16810 transitions. [2020-10-29 08:22:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 08:22:04,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 187 [2020-10-29 08:22:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:04,075 INFO L225 Difference]: With dead ends: 13118 [2020-10-29 08:22:04,075 INFO L226 Difference]: Without dead ends: 9404 [2020-10-29 08:22:04,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2020-10-29 08:22:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2020-10-29 08:22:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 8866. [2020-10-29 08:22:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8866 states. [2020-10-29 08:22:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 11024 transitions. [2020-10-29 08:22:04,464 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 11024 transitions. Word has length 187 [2020-10-29 08:22:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:04,465 INFO L481 AbstractCegarLoop]: Abstraction has 8866 states and 11024 transitions. [2020-10-29 08:22:04,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:22:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 11024 transitions. [2020-10-29 08:22:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 08:22:04,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:04,470 INFO L422 BasicCegarLoop]: trace histogram [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, 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 08:22:04,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:22:04,470 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1958398331, now seen corresponding path program 1 times [2020-10-29 08:22:04,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:04,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132401833] [2020-10-29 08:22:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:09,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:09,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 08:22:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:22:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:22:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:09,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:22:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:22:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:09,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:09,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:22:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:09,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:09,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:22:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:22:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:22:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:22:10,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132401833] [2020-10-29 08:22:10,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:10,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:22:10,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625701766] [2020-10-29 08:22:10,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:22:10,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:10,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:22:10,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:10,278 INFO L87 Difference]: Start difference. First operand 8866 states and 11024 transitions. Second operand 5 states. [2020-10-29 08:22:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:25,366 INFO L93 Difference]: Finished difference Result 18183 states and 22931 transitions. [2020-10-29 08:22:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:25,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-29 08:22:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:25,430 INFO L225 Difference]: With dead ends: 18183 [2020-10-29 08:22:25,430 INFO L226 Difference]: Without dead ends: 9323 [2020-10-29 08:22:25,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:22:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9323 states. [2020-10-29 08:22:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9323 to 9299. [2020-10-29 08:22:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9299 states. [2020-10-29 08:22:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 11654 transitions. [2020-10-29 08:22:25,708 INFO L78 Accepts]: Start accepts. Automaton has 9299 states and 11654 transitions. Word has length 198 [2020-10-29 08:22:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:25,709 INFO L481 AbstractCegarLoop]: Abstraction has 9299 states and 11654 transitions. [2020-10-29 08:22:25,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:22:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9299 states and 11654 transitions. [2020-10-29 08:22:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 08:22:25,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:25,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:25,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:22:25,715 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1127779679, now seen corresponding path program 1 times [2020-10-29 08:22:25,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:25,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505962913] [2020-10-29 08:22:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:30,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:30,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:22:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:22:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:30,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:30,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:31,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:22:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:22:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:22:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:22:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 59 proven. 142 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 08:22:31,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505962913] [2020-10-29 08:22:31,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:31,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:22:31,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213935070] [2020-10-29 08:22:31,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:22:31,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:22:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:22:31,876 INFO L87 Difference]: Start difference. First operand 9299 states and 11654 transitions. Second operand 9 states. [2020-10-29 08:22:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:56,491 INFO L93 Difference]: Finished difference Result 31845 states and 42000 transitions. [2020-10-29 08:22:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:22:56,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2020-10-29 08:22:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:56,579 INFO L225 Difference]: With dead ends: 31845 [2020-10-29 08:22:56,579 INFO L226 Difference]: Without dead ends: 21617 [2020-10-29 08:22:56,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-29 08:22:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21617 states. [2020-10-29 08:22:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21617 to 21507. [2020-10-29 08:22:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21507 states. [2020-10-29 08:22:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21507 states to 21507 states and 27011 transitions. [2020-10-29 08:22:57,156 INFO L78 Accepts]: Start accepts. Automaton has 21507 states and 27011 transitions. Word has length 265 [2020-10-29 08:22:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:57,156 INFO L481 AbstractCegarLoop]: Abstraction has 21507 states and 27011 transitions. [2020-10-29 08:22:57,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:22:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 21507 states and 27011 transitions. [2020-10-29 08:22:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-29 08:22:57,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:57,164 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:22:57,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:22:57,164 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2122153032, now seen corresponding path program 1 times [2020-10-29 08:22:57,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:57,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938714277] [2020-10-29 08:22:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 08:23:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:23:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 08:23:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:02,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:23:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:23:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:02,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:02,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:02,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:23:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:02,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:23:02,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:23:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:03,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:23:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:03,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:23:03,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 200 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:23:03,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938714277] [2020-10-29 08:23:03,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:03,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:23:03,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048029253] [2020-10-29 08:23:03,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:23:03,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:23:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:23:03,420 INFO L87 Difference]: Start difference. First operand 21507 states and 27011 transitions. Second operand 10 states. [2020-10-29 08:23:03,649 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:23:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:43,643 INFO L93 Difference]: Finished difference Result 53662 states and 73265 transitions. [2020-10-29 08:23:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:23:43,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 273 [2020-10-29 08:23:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:43,821 INFO L225 Difference]: With dead ends: 53662 [2020-10-29 08:23:43,821 INFO L226 Difference]: Without dead ends: 31264 [2020-10-29 08:23:43,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:23:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31264 states. [2020-10-29 08:23:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31264 to 30744. [2020-10-29 08:23:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30744 states. [2020-10-29 08:23:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30744 states to 30744 states and 37458 transitions. [2020-10-29 08:23:45,184 INFO L78 Accepts]: Start accepts. Automaton has 30744 states and 37458 transitions. Word has length 273 [2020-10-29 08:23:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 30744 states and 37458 transitions. [2020-10-29 08:23:45,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:23:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30744 states and 37458 transitions. [2020-10-29 08:23:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 08:23:45,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:45,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:23:45,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:23:45,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:45,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1889540679, now seen corresponding path program 1 times [2020-10-29 08:23:45,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:45,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661261553] [2020-10-29 08:23:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...