/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:34:46,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:34:46,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:34:46,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:34:46,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:34:46,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:34:46,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:34:46,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:34:46,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:34:46,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:34:46,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:34:46,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:34:46,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:34:46,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:34:46,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:34:46,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:34:46,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:34:46,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:34:46,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:34:46,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:34:46,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:34:46,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:34:46,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:34:46,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:34:46,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:34:46,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:34:46,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:34:46,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:34:46,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:34:46,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:34:46,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:34:46,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:34:46,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:34:46,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:34:46,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:34:46,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:34:46,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:34:46,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:34:46,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:34:46,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:34:46,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:34:46,135 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 [2020-10-28 10:34:46,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:34:46,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:34:46,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:34:46,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:34:46,192 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:34:46,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:34:46,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:34:46,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:34:46,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:34:46,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:34:46,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:34:46,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:34:46,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:34:46,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:34:46,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:34:46,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:34:46,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:34:46,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:34:46,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:34:46,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:34:46,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:34:46,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:34:46,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:34:46,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:34:46,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:34:46,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:34:46,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:34:46,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:34:46,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:34:46,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:34:46,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:34:46,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:34:46,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:34:46,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:34:46,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:34:46,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-28 10:34:46,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fafa65ee/74c0deab119f4d02b522b0fd14b70357/FLAGce8fcd3ca [2020-10-28 10:34:47,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:34:47,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-28 10:34:47,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fafa65ee/74c0deab119f4d02b522b0fd14b70357/FLAGce8fcd3ca [2020-10-28 10:34:48,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fafa65ee/74c0deab119f4d02b522b0fd14b70357 [2020-10-28 10:34:48,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:34:48,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:34:48,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:34:48,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:34:48,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:34:48,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:48" (1/1) ... [2020-10-28 10:34:48,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55176a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:48, skipping insertion in model container [2020-10-28 10:34:48,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:48" (1/1) ... [2020-10-28 10:34:48,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:34:48,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:34:49,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:34:49,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:34:50,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:34:50,878 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:34:50,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50 WrapperNode [2020-10-28 10:34:50,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:34:50,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:34:50,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:34:50,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:34:50,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:50,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:50,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:50,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:51,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:51,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:51,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (1/1) ... [2020-10-28 10:34:51,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:34:51,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:34:51,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:34:51,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:34:51,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (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 [2020-10-28 10:34:51,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:34:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:34:51,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:34:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:34:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:34:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:34:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:34:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:34:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:34:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:34:56,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:34:56,479 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:34:56,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:56 BoogieIcfgContainer [2020-10-28 10:34:56,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:34:56,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:34:56,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:34:56,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:34:56,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:34:48" (1/3) ... [2020-10-28 10:34:56,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba88c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:56, skipping insertion in model container [2020-10-28 10:34:56,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:50" (2/3) ... [2020-10-28 10:34:56,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba88c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:56, skipping insertion in model container [2020-10-28 10:34:56,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:56" (3/3) ... [2020-10-28 10:34:56,503 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label47.c [2020-10-28 10:34:56,515 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:34:56,522 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:34:56,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:34:56,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:34:56,596 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:34:56,596 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:34:56,596 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:34:56,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:34:56,596 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:34:56,597 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:34:56,597 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:34:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:34:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-28 10:34:56,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:56,711 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] [2020-10-28 10:34:56,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash 556137672, now seen corresponding path program 1 times [2020-10-28 10:34:56,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:56,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821995614] [2020-10-28 10:34:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:02,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-28 10:35:02,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:35:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-28 10:35:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:02,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:35:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-28 10:35:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:35:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:35:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:03,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:04,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821995614] [2020-10-28 10:35:04,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:04,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:35:04,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688435622] [2020-10-28 10:35:04,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:35:04,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:35:04,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:35:04,379 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-28 10:35:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:15,712 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-28 10:35:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:35:15,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 799 [2020-10-28 10:35:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:15,763 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:35:15,763 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:35:15,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:35:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:35:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-28 10:35:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-28 10:35:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-28 10:35:15,965 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 799 [2020-10-28 10:35:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:15,969 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-28 10:35:15,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:35:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-28 10:35:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-28 10:35:15,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:16,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:16,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:35:16,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:16,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1556708967, now seen corresponding path program 1 times [2020-10-28 10:35:16,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:16,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87439195] [2020-10-28 10:35:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:21,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:21,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-28 10:35:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 10:35:21,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:21,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:35:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:35:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:35:21,436 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:35:21,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:35:21,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:21,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:21,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:35:21,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:21,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:35:21,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:21,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:35:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:22,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87439195] [2020-10-28 10:35:22,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:22,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:35:22,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074374785] [2020-10-28 10:35:22,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:22,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:22,060 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 7 states. [2020-10-28 10:35:22,202 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:31,311 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:35:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:35,126 INFO L93 Difference]: Finished difference Result 5142 states and 8467 transitions. [2020-10-28 10:35:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:35:35,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-28 10:35:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:35,153 INFO L225 Difference]: With dead ends: 5142 [2020-10-28 10:35:35,153 INFO L226 Difference]: Without dead ends: 3449 [2020-10-28 10:35:35,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:35:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-28 10:35:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3437. [2020-10-28 10:35:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-28 10:35:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5342 transitions. [2020-10-28 10:35:35,348 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5342 transitions. Word has length 810 [2020-10-28 10:35:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:35,349 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5342 transitions. [2020-10-28 10:35:35,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5342 transitions. [2020-10-28 10:35:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-28 10:35:35,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:35,394 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:35:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:35:35,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1523531445, now seen corresponding path program 1 times [2020-10-28 10:35:35,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:35,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365411518] [2020-10-28 10:35:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-28 10:35:40,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-28 10:35:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:40,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:35:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 10:35:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:41,029 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:35:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:35:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:41,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:35:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:35:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:41,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:35:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:41,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365411518] [2020-10-28 10:35:41,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:41,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:35:41,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391209978] [2020-10-28 10:35:41,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:35:41,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:41,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:35:41,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:35:41,980 INFO L87 Difference]: Start difference. First operand 3437 states and 5342 transitions. Second operand 8 states. [2020-10-28 10:35:43,227 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:35:45,999 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:02,198 INFO L93 Difference]: Finished difference Result 13848 states and 22190 transitions. [2020-10-28 10:36:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:36:02,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2020-10-28 10:36:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:02,258 INFO L225 Difference]: With dead ends: 13848 [2020-10-28 10:36:02,259 INFO L226 Difference]: Without dead ends: 10417 [2020-10-28 10:36:02,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:36:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2020-10-28 10:36:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 10411. [2020-10-28 10:36:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10411 states. [2020-10-28 10:36:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 14943 transitions. [2020-10-28 10:36:02,601 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 14943 transitions. Word has length 812 [2020-10-28 10:36:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:02,602 INFO L481 AbstractCegarLoop]: Abstraction has 10411 states and 14943 transitions. [2020-10-28 10:36:02,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:36:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 14943 transitions. [2020-10-28 10:36:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-28 10:36:02,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:02,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:36:02,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:36:02,646 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:02,647 INFO L82 PathProgramCache]: Analyzing trace with hash 469147668, now seen corresponding path program 1 times [2020-10-28 10:36:02,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:02,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747076473] [2020-10-28 10:36:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:05,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:07,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-28 10:36:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:36:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 10:36:07,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:07,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:36:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 10:36:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:08,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:08,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:36:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:08,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:08,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:36:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:36:08,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:08,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:36:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:36:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:36:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 10:36:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 10:36:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:08,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 10:36:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:36:08,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747076473] [2020-10-28 10:36:08,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:08,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:36:08,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400144677] [2020-10-28 10:36:08,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:08,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:08,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:08,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:08,843 INFO L87 Difference]: Start difference. First operand 10411 states and 14943 transitions. Second operand 7 states. [2020-10-28 10:36:12,304 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:23,634 INFO L93 Difference]: Finished difference Result 31515 states and 49538 transitions. [2020-10-28 10:36:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:36:23,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 887 [2020-10-28 10:36:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:23,799 INFO L225 Difference]: With dead ends: 31515 [2020-10-28 10:36:23,799 INFO L226 Difference]: Without dead ends: 21110 [2020-10-28 10:36:23,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:36:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21110 states. [2020-10-28 10:36:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21110 to 20823. [2020-10-28 10:36:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20823 states. [2020-10-28 10:36:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20823 states to 20823 states and 28142 transitions. [2020-10-28 10:36:24,570 INFO L78 Accepts]: Start accepts. Automaton has 20823 states and 28142 transitions. Word has length 887 [2020-10-28 10:36:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:24,571 INFO L481 AbstractCegarLoop]: Abstraction has 20823 states and 28142 transitions. [2020-10-28 10:36:24,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 20823 states and 28142 transitions. [2020-10-28 10:36:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-28 10:36:24,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:24,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:24,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:36:24,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:24,648 INFO L82 PathProgramCache]: Analyzing trace with hash -869243903, now seen corresponding path program 1 times [2020-10-28 10:36:24,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:24,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345080195] [2020-10-28 10:36:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:29,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:29,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 916 [2020-10-28 10:36:29,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 10:36:29,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:29,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:36:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 10:36:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:36:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:36:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:30,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:36:30,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:30,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:36:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:36:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 10:36:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 10:36:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:30,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 10:36:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:36:30,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345080195] [2020-10-28 10:36:30,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:30,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:36:30,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257871518] [2020-10-28 10:36:30,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:30,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:30,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:30,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:30,734 INFO L87 Difference]: Start difference. First operand 20823 states and 28142 transitions. Second operand 7 states. [2020-10-28 10:36:30,862 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:35,168 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:36:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:44,916 INFO L93 Difference]: Finished difference Result 60348 states and 84655 transitions. [2020-10-28 10:36:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:36:44,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 896 [2020-10-28 10:36:44,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:45,076 INFO L225 Difference]: With dead ends: 60348 [2020-10-28 10:36:45,076 INFO L226 Difference]: Without dead ends: 39531 [2020-10-28 10:36:45,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:36:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39531 states. [2020-10-28 10:36:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39531 to 37764. [2020-10-28 10:36:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37764 states. [2020-10-28 10:36:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 48808 transitions. [2020-10-28 10:36:46,378 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 48808 transitions. Word has length 896 [2020-10-28 10:36:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:46,379 INFO L481 AbstractCegarLoop]: Abstraction has 37764 states and 48808 transitions. [2020-10-28 10:36:46,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 48808 transitions. [2020-10-28 10:36:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-10-28 10:36:46,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:46,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:36:46,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:36:46,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1679789055, now seen corresponding path program 1 times [2020-10-28 10:36:46,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:46,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688361062] [2020-10-28 10:36:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:51,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 942 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:36:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 10:36:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:51,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:36:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:36:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:36:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 10:36:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 10:36:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:52,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:52,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:36:52,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:36:52,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:52,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:36:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 130 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 10:36:52,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688361062] [2020-10-28 10:36:52,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:52,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:36:52,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215086215] [2020-10-28 10:36:52,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:52,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:52,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:52,485 INFO L87 Difference]: Start difference. First operand 37764 states and 48808 transitions. Second operand 7 states. [2020-10-28 10:37:03,400 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:08,844 INFO L93 Difference]: Finished difference Result 94325 states and 125274 transitions. [2020-10-28 10:37:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:37:08,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 920 [2020-10-28 10:37:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:09,064 INFO L225 Difference]: With dead ends: 94325 [2020-10-28 10:37:09,064 INFO L226 Difference]: Without dead ends: 56567 [2020-10-28 10:37:09,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:37:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56567 states. [2020-10-28 10:37:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56567 to 54027. [2020-10-28 10:37:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54027 states. [2020-10-28 10:37:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54027 states to 54027 states and 68362 transitions. [2020-10-28 10:37:10,356 INFO L78 Accepts]: Start accepts. Automaton has 54027 states and 68362 transitions. Word has length 920 [2020-10-28 10:37:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:10,357 INFO L481 AbstractCegarLoop]: Abstraction has 54027 states and 68362 transitions. [2020-10-28 10:37:10,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:37:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 54027 states and 68362 transitions. [2020-10-28 10:37:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-28 10:37:10,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:10,478 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:37:10,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:37:10,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -241988341, now seen corresponding path program 1 times [2020-10-28 10:37:10,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:10,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318382502] [2020-10-28 10:37:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:10,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-28 10:37:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:37:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-28 10:37:15,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:15,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 10:37:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:37:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:37:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:37:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:37:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:37:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 10:37:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 10:37:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-28 10:37:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:37:16,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 10:37:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 10:37:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:16,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:37:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 288 proven. 39 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-28 10:37:17,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318382502] [2020-10-28 10:37:17,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:17,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:37:17,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919258953] [2020-10-28 10:37:17,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:37:17,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:17,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:37:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:37:17,063 INFO L87 Difference]: Start difference. First operand 54027 states and 68362 transitions. Second operand 7 states. [2020-10-28 10:37:17,317 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:27,723 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:32,272 INFO L93 Difference]: Finished difference Result 130822 states and 168146 transitions. [2020-10-28 10:37:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:37:32,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1020 [2020-10-28 10:37:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:32,557 INFO L225 Difference]: With dead ends: 130822 [2020-10-28 10:37:32,557 INFO L226 Difference]: Without dead ends: 73437 [2020-10-28 10:37:32,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:37:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73437 states. [2020-10-28 10:37:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73437 to 67467. [2020-10-28 10:37:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67467 states. [2020-10-28 10:37:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67467 states to 67467 states and 80853 transitions. [2020-10-28 10:37:34,452 INFO L78 Accepts]: Start accepts. Automaton has 67467 states and 80853 transitions. Word has length 1020 [2020-10-28 10:37:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:34,453 INFO L481 AbstractCegarLoop]: Abstraction has 67467 states and 80853 transitions. [2020-10-28 10:37:34,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:37:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 67467 states and 80853 transitions. [2020-10-28 10:37:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2020-10-28 10:37:34,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:34,532 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:37:34,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:37:34,533 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:34,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1396225633, now seen corresponding path program 1 times [2020-10-28 10:37:34,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:34,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554348075] [2020-10-28 10:37:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:39,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1286 [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-28 10:37:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-28 10:37:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:40,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:37:40,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:37:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:40,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:37:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:40,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 10:37:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:37:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 10:37:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:40,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:37:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 10:37:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:40,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:40,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-28 10:37:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:37:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:41,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:37:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 10:37:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 652 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 10:37:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554348075] [2020-10-28 10:37:41,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:41,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:37:41,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968140584] [2020-10-28 10:37:41,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:37:41,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:41,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:37:41,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:37:41,992 INFO L87 Difference]: Start difference. First operand 67467 states and 80853 transitions. Second operand 7 states. [2020-10-28 10:37:42,251 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:48,742 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:38:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:38:06,966 INFO L93 Difference]: Finished difference Result 192912 states and 236857 transitions. [2020-10-28 10:38:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:38:06,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1260 [2020-10-28 10:38:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:38:07,681 INFO L225 Difference]: With dead ends: 192912 [2020-10-28 10:38:07,681 INFO L226 Difference]: Without dead ends: 125451 [2020-10-28 10:38:07,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:38:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125451 states. [2020-10-28 10:38:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125451 to 124566. [2020-10-28 10:38:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124566 states. [2020-10-28 10:38:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124566 states to 124566 states and 150852 transitions. [2020-10-28 10:38:11,069 INFO L78 Accepts]: Start accepts. Automaton has 124566 states and 150852 transitions. Word has length 1260 [2020-10-28 10:38:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:38:11,070 INFO L481 AbstractCegarLoop]: Abstraction has 124566 states and 150852 transitions. [2020-10-28 10:38:11,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:38:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 124566 states and 150852 transitions. [2020-10-28 10:38:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1382 [2020-10-28 10:38:11,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:38:11,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:38:11,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:38:11,225 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:38:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:38:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -12511528, now seen corresponding path program 1 times [2020-10-28 10:38:11,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:38:11,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167639370] [2020-10-28 10:38:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:38:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1405 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:38:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-28 10:38:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 346 [2020-10-28 10:38:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:38:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:38:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:38:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:17,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:38:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 10:38:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:17,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:17,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:38:17,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 10:38:17,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:17,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:38:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:38:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:38:17,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 10:38:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:17,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:17,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-28 10:38:17,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-28 10:38:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:38:18,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:38:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:38:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:38:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:38:18,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 10:38:18,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:38:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 10:38:18,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:38:18,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:38:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:38:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:38:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:38:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0