/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/Problem04_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:06:43,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:06:43,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:06:43,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:06:43,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:06:43,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:06:43,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:06:44,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:06:44,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:06:44,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:06:44,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:06:44,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:06:44,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:06:44,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:06:44,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:06:44,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:06:44,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:06:44,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:06:44,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:06:44,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:06:44,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:06:44,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:06:44,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:06:44,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:06:44,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:06:44,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:06:44,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:06:44,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:06:44,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:06:44,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:06:44,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:06:44,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:06:44,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:06:44,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:06:44,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:06:44,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:06:44,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:06:44,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:06:44,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:06:44,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:06:44,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:06:44,120 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 05:06:44,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:06:44,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:06:44,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:06:44,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:06:44,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:06:44,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:06:44,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:06:44,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:06:44,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:06:44,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:06:44,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:06:44,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:06:44,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:06:44,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:06:44,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:06:44,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:06:44,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:06:44,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:06:44,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:06:44,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:06:44,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:06:44,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:06:44,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:06:44,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:06:44,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:06:44,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:06:44,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:06:44,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:06:44,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:06:44,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:06:44,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:06:44,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:06:44,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:06:44,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:06:44,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:06:44,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2020-10-29 05:06:44,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11b2ba466/db5c5c6fce834c1380c9ed766a050321/FLAG831271653 [2020-10-29 05:06:45,758 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:06:45,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2020-10-29 05:06:45,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11b2ba466/db5c5c6fce834c1380c9ed766a050321/FLAG831271653 [2020-10-29 05:06:46,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11b2ba466/db5c5c6fce834c1380c9ed766a050321 [2020-10-29 05:06:46,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:06:46,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:06:46,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:06:46,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:06:46,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:06:46,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:46" (1/1) ... [2020-10-29 05:06:46,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d77c73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:46, skipping insertion in model container [2020-10-29 05:06:46,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:46" (1/1) ... [2020-10-29 05:06:46,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:06:46,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:06:47,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:06:47,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:06:48,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:06:48,627 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:06:48,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48 WrapperNode [2020-10-29 05:06:48,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:06:48,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:06:48,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:06:48,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:06:48,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (1/1) ... [2020-10-29 05:06:48,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:06:48,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:06:48,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:06:48,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:06:48,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (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 05:06:49,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:06:49,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:06:49,078 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:06:49,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:06:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:06:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:06:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:06:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:06:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:06:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:06:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:06:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:06:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:06:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:06:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:06:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:06:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:06:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:06:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:06:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:06:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:06:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:06:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:06:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:06:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:06:54,243 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:06:54,243 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:06:54,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:54 BoogieIcfgContainer [2020-10-29 05:06:54,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:06:54,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:06:54,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:06:54,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:06:54,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:06:46" (1/3) ... [2020-10-29 05:06:54,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1106f5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:54, skipping insertion in model container [2020-10-29 05:06:54,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:48" (2/3) ... [2020-10-29 05:06:54,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1106f5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:54, skipping insertion in model container [2020-10-29 05:06:54,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:54" (3/3) ... [2020-10-29 05:06:54,255 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label16.c [2020-10-29 05:06:54,266 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:06:54,272 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:06:54,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:06:54,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:06:54,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:06:54,319 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:06:54,319 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:06:54,319 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:06:54,319 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:06:54,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:06:54,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:06:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:06:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-29 05:06:54,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:54,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:54,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash 18754564, now seen corresponding path program 1 times [2020-10-29 05:06:54,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:54,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571030030] [2020-10-29 05:06:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-29 05:07:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:07:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-29 05:07:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:00,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:07:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:07:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-29 05:07:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:07:01,193 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:07:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:01,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:07:01,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:01,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:07:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:02,701 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 05:07:02,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571030030] [2020-10-29 05:07:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:07:02,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:07:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448111047] [2020-10-29 05:07:02,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:07:02,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:02,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:07:02,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:07:02,731 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:07:02,925 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:07:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:13,933 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:07:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:07:13,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 812 [2020-10-29 05:07:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:13,976 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:07:13,977 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:07:13,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:07:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:07:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:07:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:07:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-29 05:07:14,176 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 812 [2020-10-29 05:07:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:14,181 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-29 05:07:14,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:07:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-29 05:07:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-29 05:07:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:14,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:14,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:07:14,219 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:14,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1304583398, now seen corresponding path program 1 times [2020-10-29 05:07:14,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:14,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910340377] [2020-10-29 05:07:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:19,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:19,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-29 05:07:19,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:07:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:07:19,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:19,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:07:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:07:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:07:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:20,573 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:07:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:07:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:07:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:07:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:07:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:07:24,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910340377] [2020-10-29 05:07:24,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:07:24,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:07:24,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379071363] [2020-10-29 05:07:24,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:07:24,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:24,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:07:24,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:07:24,590 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 5 states. [2020-10-29 05:07:24,892 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:07:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:37,269 INFO L93 Difference]: Finished difference Result 4173 states and 7026 transitions. [2020-10-29 05:07:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:07:37,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 820 [2020-10-29 05:07:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:37,285 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:07:37,285 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:07:37,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:07:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:07:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:07:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:07:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2047 transitions. [2020-10-29 05:07:37,360 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2047 transitions. Word has length 820 [2020-10-29 05:07:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:37,361 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2047 transitions. [2020-10-29 05:07:37,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:07:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2047 transitions. [2020-10-29 05:07:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-29 05:07:37,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:37,373 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:37,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:07:37,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash -40154115, now seen corresponding path program 1 times [2020-10-29 05:07:37,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:37,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490765443] [2020-10-29 05:07:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:42,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:42,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-29 05:07:42,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:07:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 816 [2020-10-29 05:07:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:43,165 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:07:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:43,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:43,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:43,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:07:43,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:43,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:07:43,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:07:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:43,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:07:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:07:44,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490765443] [2020-10-29 05:07:44,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:07:44,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:07:44,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591801738] [2020-10-29 05:07:44,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:07:44,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:07:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:07:44,152 INFO L87 Difference]: Start difference. First operand 1690 states and 2047 transitions. Second operand 5 states. [2020-10-29 05:07:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:51,869 INFO L93 Difference]: Finished difference Result 5081 states and 6224 transitions. [2020-10-29 05:07:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:07:51,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 827 [2020-10-29 05:07:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:51,889 INFO L225 Difference]: With dead ends: 5081 [2020-10-29 05:07:51,889 INFO L226 Difference]: Without dead ends: 3397 [2020-10-29 05:07:51,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:07:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-29 05:07:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3380. [2020-10-29 05:07:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-10-29 05:07:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4002 transitions. [2020-10-29 05:07:52,005 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4002 transitions. Word has length 827 [2020-10-29 05:07:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:52,008 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 4002 transitions. [2020-10-29 05:07:52,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:07:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4002 transitions. [2020-10-29 05:07:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2020-10-29 05:07:52,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:52,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:07:52,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:07:52,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1527207715, now seen corresponding path program 1 times [2020-10-29 05:07:52,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:52,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341218650] [2020-10-29 05:07:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-29 05:07:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:07:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 05:07:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:57,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:07:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:07:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-29 05:07:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:59,210 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-29 05:07:59,332 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-29 05:07:59,672 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-29 05:07:59,801 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 05:08:00,500 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:08:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:00,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:08:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:08:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:08:05,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341218650] [2020-10-29 05:08:05,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:05,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:08:05,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290488872] [2020-10-29 05:08:05,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:08:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:08:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:08:05,046 INFO L87 Difference]: Start difference. First operand 3380 states and 4002 transitions. Second operand 17 states. [2020-10-29 05:08:05,652 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:08:05,884 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:08:07,678 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:08:10,685 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:08:10,941 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 05:08:12,609 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:08:13,013 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 05:08:14,475 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:08:16,373 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:08:16,603 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:08:17,328 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 05:08:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:08:20,956 INFO L93 Difference]: Finished difference Result 7280 states and 8733 transitions. [2020-10-29 05:08:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:08:20,957 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 843 [2020-10-29 05:08:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:08:20,975 INFO L225 Difference]: With dead ends: 7280 [2020-10-29 05:08:20,975 INFO L226 Difference]: Without dead ends: 3707 [2020-10-29 05:08:20,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:08:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-29 05:08:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3690. [2020-10-29 05:08:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3690 states. [2020-10-29 05:08:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 4315 transitions. [2020-10-29 05:08:21,088 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 4315 transitions. Word has length 843 [2020-10-29 05:08:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:08:21,089 INFO L481 AbstractCegarLoop]: Abstraction has 3690 states and 4315 transitions. [2020-10-29 05:08:21,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:08:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 4315 transitions. [2020-10-29 05:08:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2020-10-29 05:08:21,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:08:21,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:21,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:08:21,108 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:08:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:08:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1230183303, now seen corresponding path program 1 times [2020-10-29 05:08:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:08:21,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120189306] [2020-10-29 05:08:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:08:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 867 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-29 05:08:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:08:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:08:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:08:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:08:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:27,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:08:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:08:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:27,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:08:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:08:31,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120189306] [2020-10-29 05:08:31,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:31,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:08:31,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125498674] [2020-10-29 05:08:31,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:08:31,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:31,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:08:31,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:08:31,301 INFO L87 Difference]: Start difference. First operand 3690 states and 4315 transitions. Second operand 6 states. [2020-10-29 05:08:31,719 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:08:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:08:39,723 INFO L93 Difference]: Finished difference Result 8179 states and 9724 transitions. [2020-10-29 05:08:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:08:39,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 847 [2020-10-29 05:08:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:08:39,751 INFO L225 Difference]: With dead ends: 8179 [2020-10-29 05:08:39,751 INFO L226 Difference]: Without dead ends: 3707 [2020-10-29 05:08:39,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:08:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-29 05:08:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3690. [2020-10-29 05:08:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3690 states. [2020-10-29 05:08:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 4313 transitions. [2020-10-29 05:08:39,853 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 4313 transitions. Word has length 847 [2020-10-29 05:08:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:08:39,854 INFO L481 AbstractCegarLoop]: Abstraction has 3690 states and 4313 transitions. [2020-10-29 05:08:39,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:08:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 4313 transitions. [2020-10-29 05:08:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2020-10-29 05:08:39,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:08:39,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:39,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:08:39,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:08:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:08:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1939494792, now seen corresponding path program 1 times [2020-10-29 05:08:39,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:08:39,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764766241] [2020-10-29 05:08:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:08:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:44,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-29 05:08:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-29 05:08:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:08:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:45,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:45,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:08:45,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:08:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:45,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:08:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:45,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:45,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:08:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:08:49,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764766241] [2020-10-29 05:08:49,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:49,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:08:49,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801114433] [2020-10-29 05:08:49,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:08:49,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:08:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:08:49,927 INFO L87 Difference]: Start difference. First operand 3690 states and 4313 transitions. Second operand 5 states. [2020-10-29 05:08:50,304 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:08:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:08:58,377 INFO L93 Difference]: Finished difference Result 8178 states and 9718 transitions. [2020-10-29 05:08:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:08:58,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 848 [2020-10-29 05:08:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:08:58,396 INFO L225 Difference]: With dead ends: 8178 [2020-10-29 05:08:58,397 INFO L226 Difference]: Without dead ends: 3707 [2020-10-29 05:08:58,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:08:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-29 05:08:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3690. [2020-10-29 05:08:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3690 states. [2020-10-29 05:08:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 4311 transitions. [2020-10-29 05:08:58,491 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 4311 transitions. Word has length 848 [2020-10-29 05:08:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:08:58,491 INFO L481 AbstractCegarLoop]: Abstraction has 3690 states and 4311 transitions. [2020-10-29 05:08:58,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:08:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 4311 transitions. [2020-10-29 05:08:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-29 05:08:58,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:08:58,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:58,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:08:58,509 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:08:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:08:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 677965334, now seen corresponding path program 1 times [2020-10-29 05:08:58,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:08:58,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273441768] [2020-10-29 05:08:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:08:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:03,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 878 [2020-10-29 05:09:03,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:09:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 05:09:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:03,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:09:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 05:09:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-29 05:09:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:05,492 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-29 05:09:06,059 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-29 05:09:06,215 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-29 05:09:06,444 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-10-29 05:09:06,666 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-10-29 05:09:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:06,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:06,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:06,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:06,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:06,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:09:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:09:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:09:12,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273441768] [2020-10-29 05:09:12,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:12,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:09:12,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935528655] [2020-10-29 05:09:12,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:09:12,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:12,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:09:12,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:09:12,583 INFO L87 Difference]: Start difference. First operand 3690 states and 4311 transitions. Second operand 17 states. [2020-10-29 05:09:13,119 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:09:13,356 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 05:09:14,280 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2020-10-29 05:09:17,708 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:09:17,952 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:09:19,221 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:09:20,472 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-10-29 05:09:22,417 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:09:22,652 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:09:23,443 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2020-10-29 05:09:25,780 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-29 05:09:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:27,065 INFO L93 Difference]: Finished difference Result 8005 states and 9485 transitions. [2020-10-29 05:09:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:09:27,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 860 [2020-10-29 05:09:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:27,091 INFO L225 Difference]: With dead ends: 8005 [2020-10-29 05:09:27,091 INFO L226 Difference]: Without dead ends: 4048 [2020-10-29 05:09:27,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:09:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2020-10-29 05:09:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4031. [2020-10-29 05:09:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4031 states. [2020-10-29 05:09:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 4655 transitions. [2020-10-29 05:09:27,190 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 4655 transitions. Word has length 860 [2020-10-29 05:09:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:27,191 INFO L481 AbstractCegarLoop]: Abstraction has 4031 states and 4655 transitions. [2020-10-29 05:09:27,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:09:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 4655 transitions. [2020-10-29 05:09:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-29 05:09:27,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:27,209 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:27,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:09:27,210 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1240012059, now seen corresponding path program 1 times [2020-10-29 05:09:27,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:27,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674692954] [2020-10-29 05:09:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:32,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-29 05:09:32,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:09:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-29 05:09:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:32,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:32,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:32,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:32,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:32,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:32,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:09:32,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:09:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:09:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:09:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:09:36,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674692954] [2020-10-29 05:09:36,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:36,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:09:36,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782785233] [2020-10-29 05:09:36,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:09:36,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:36,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:09:36,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:09:36,952 INFO L87 Difference]: Start difference. First operand 4031 states and 4655 transitions. Second operand 5 states. [2020-10-29 05:09:37,539 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:09:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:45,184 INFO L93 Difference]: Finished difference Result 8839 states and 10382 transitions. [2020-10-29 05:09:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:45,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 885 [2020-10-29 05:09:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:45,204 INFO L225 Difference]: With dead ends: 8839 [2020-10-29 05:09:45,204 INFO L226 Difference]: Without dead ends: 4048 [2020-10-29 05:09:45,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2020-10-29 05:09:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4031. [2020-10-29 05:09:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4031 states. [2020-10-29 05:09:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 4653 transitions. [2020-10-29 05:09:45,304 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 4653 transitions. Word has length 885 [2020-10-29 05:09:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:45,305 INFO L481 AbstractCegarLoop]: Abstraction has 4031 states and 4653 transitions. [2020-10-29 05:09:45,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:09:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 4653 transitions. [2020-10-29 05:09:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-29 05:09:45,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:45,322 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:45,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:09:45,323 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:45,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1961045899, now seen corresponding path program 1 times [2020-10-29 05:09:45,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:45,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956321553] [2020-10-29 05:09:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 913 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 05:09:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 816 [2020-10-29 05:09:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:50,907 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:09:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:50,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:50,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:09:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:09:50,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:50,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:09:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:09:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:09:51,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956321553] [2020-10-29 05:09:51,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:51,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:09:51,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417509048] [2020-10-29 05:09:51,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:09:51,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:51,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:09:51,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:51,910 INFO L87 Difference]: Start difference. First operand 4031 states and 4653 transitions. Second operand 6 states. [2020-10-29 05:09:52,037 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:09:52,412 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:10:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:04,229 INFO L93 Difference]: Finished difference Result 9763 states and 11540 transitions. [2020-10-29 05:10:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:10:04,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 893 [2020-10-29 05:10:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:04,262 INFO L225 Difference]: With dead ends: 9763 [2020-10-29 05:10:04,262 INFO L226 Difference]: Without dead ends: 5738 [2020-10-29 05:10:04,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:10:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2020-10-29 05:10:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 5730. [2020-10-29 05:10:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5730 states. [2020-10-29 05:10:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 6596 transitions. [2020-10-29 05:10:04,396 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 6596 transitions. Word has length 893 [2020-10-29 05:10:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:04,398 INFO L481 AbstractCegarLoop]: Abstraction has 5730 states and 6596 transitions. [2020-10-29 05:10:04,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:10:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 6596 transitions. [2020-10-29 05:10:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-29 05:10:04,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:04,422 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:04,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:10:04,422 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2026523491, now seen corresponding path program 1 times [2020-10-29 05:10:04,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:04,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55883223] [2020-10-29 05:10:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:10:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 05:10:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-29 05:10:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:10,293 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:10:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:10:10,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:10,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:10,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:10,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:10:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 05:10:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:10:14,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55883223] [2020-10-29 05:10:14,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:14,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:10:14,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363982263] [2020-10-29 05:10:14,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:10:14,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:14,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:10:14,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:10:14,988 INFO L87 Difference]: Start difference. First operand 5730 states and 6596 transitions. Second operand 6 states. [2020-10-29 05:10:15,880 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:10:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:23,490 INFO L93 Difference]: Finished difference Result 12236 states and 14271 transitions. [2020-10-29 05:10:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:10:23,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 945 [2020-10-29 05:10:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:23,507 INFO L225 Difference]: With dead ends: 12236 [2020-10-29 05:10:23,507 INFO L226 Difference]: Without dead ends: 5738 [2020-10-29 05:10:23,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:10:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2020-10-29 05:10:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 5730. [2020-10-29 05:10:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5730 states. [2020-10-29 05:10:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 6592 transitions. [2020-10-29 05:10:23,632 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 6592 transitions. Word has length 945 [2020-10-29 05:10:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:23,633 INFO L481 AbstractCegarLoop]: Abstraction has 5730 states and 6592 transitions. [2020-10-29 05:10:23,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:10:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 6592 transitions. [2020-10-29 05:10:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2020-10-29 05:10:23,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:23,658 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:23,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:10:23,658 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1813992027, now seen corresponding path program 1 times [2020-10-29 05:10:23,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:23,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887688576] [2020-10-29 05:10:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking...