/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:50:56,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:50:56,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:50:56,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:50:56,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:50:56,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:50:56,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:50:56,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:50:56,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:50:56,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:50:56,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:50:56,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:50:56,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:50:56,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:50:56,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:50:56,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:50:56,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:50:56,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:50:56,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:50:56,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:50:56,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:50:56,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:50:56,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:50:56,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:50:56,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:50:56,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:50:56,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:50:56,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:50:56,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:50:56,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:50:56,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:50:56,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:50:56,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:50:56,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:50:56,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:50:56,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:50:56,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:50:56,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:50:56,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:50:56,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:50:56,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:50:56,164 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 [2020-10-26 23:50:56,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:50:56,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:50:56,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:50:56,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:50:56,198 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:50:56,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:50:56,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:50:56,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:50:56,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:50:56,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:50:56,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:50:56,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:50:56,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:50:56,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:50:56,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:50:56,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:50:56,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:50:56,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:50:56,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:50:56,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:50:56,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:50:56,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:50:56,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:50:56,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:50:56,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:50:56,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:50:56,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:50:56,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:50:56,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:50:56,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:50:56,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:50:56,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:50:56,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:50:56,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:50:56,755 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:50:56,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-26 23:50:56,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4179146b1/efce5dd95b43493fbf5776a1222bf12d/FLAG847bb6638 [2020-10-26 23:50:57,856 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:50:57,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-26 23:50:57,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4179146b1/efce5dd95b43493fbf5776a1222bf12d/FLAG847bb6638 [2020-10-26 23:50:57,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4179146b1/efce5dd95b43493fbf5776a1222bf12d [2020-10-26 23:50:57,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:50:57,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:50:57,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:50:57,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:50:57,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:50:57,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:50:57" (1/1) ... [2020-10-26 23:50:57,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:57, skipping insertion in model container [2020-10-26 23:50:57,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:50:57" (1/1) ... [2020-10-26 23:50:57,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:50:58,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:50:58,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:50:59,008 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:50:59,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:50:59,494 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:50:59,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59 WrapperNode [2020-10-26 23:50:59,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:50:59,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:50:59,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:50:59,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:50:59,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... [2020-10-26 23:50:59,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:50:59,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:50:59,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:50:59,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:50:59,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:50:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:50:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:50:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:50:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:50:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:50:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:50:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:50:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:50:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:50:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:50:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:50:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:50:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:50:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:50:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:50:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:50:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:50:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:50:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:50:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:50:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:51:03,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:51:03,279 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:51:03,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:03 BoogieIcfgContainer [2020-10-26 23:51:03,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:51:03,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:51:03,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:51:03,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:51:03,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:50:57" (1/3) ... [2020-10-26 23:51:03,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d08843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:03, skipping insertion in model container [2020-10-26 23:51:03,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:50:59" (2/3) ... [2020-10-26 23:51:03,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d08843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:03, skipping insertion in model container [2020-10-26 23:51:03,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:03" (3/3) ... [2020-10-26 23:51:03,302 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2020-10-26 23:51:03,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:51:03,324 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:51:03,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:51:03,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:51:03,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:51:03,400 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:51:03,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:51:03,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:51:03,401 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:51:03,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:51:03,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:51:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:51:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 23:51:03,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:03,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:03,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash -104759924, now seen corresponding path program 1 times [2020-10-26 23:51:03,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:03,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022107277] [2020-10-26 23:51:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:04,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 23:51:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-26 23:51:04,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 23:51:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 23:51:04,321 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:51:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:51:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:04,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022107277] [2020-10-26 23:51:04,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:04,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:51:04,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833178553] [2020-10-26 23:51:04,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:51:04,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:04,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:51:04,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:51:04,448 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:51:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:09,558 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-26 23:51:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:51:09,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 23:51:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:09,586 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:51:09,586 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:51:09,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:51:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:51:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:51:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:51:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-26 23:51:09,724 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 13 [2020-10-26 23:51:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:09,725 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-26 23:51:09,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:51:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-26 23:51:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-26 23:51:09,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:09,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:09,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:51:09,731 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1104471301, now seen corresponding path program 1 times [2020-10-26 23:51:09,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:09,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657877040] [2020-10-26 23:51:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:51:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-26 23:51:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:51:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:11,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:51:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:51:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:51:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:51:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:11,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657877040] [2020-10-26 23:51:11,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:11,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:51:11,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266275588] [2020-10-26 23:51:11,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:11,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:11,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:11,393 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-26 23:51:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:16,890 INFO L93 Difference]: Finished difference Result 1765 states and 2732 transitions. [2020-10-26 23:51:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:16,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-26 23:51:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:16,906 INFO L225 Difference]: With dead ends: 1765 [2020-10-26 23:51:16,906 INFO L226 Difference]: Without dead ends: 1081 [2020-10-26 23:51:16,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-26 23:51:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1042. [2020-10-26 23:51:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:51:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1495 transitions. [2020-10-26 23:51:16,996 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1495 transitions. Word has length 88 [2020-10-26 23:51:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:16,997 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1495 transitions. [2020-10-26 23:51:16,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1495 transitions. [2020-10-26 23:51:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 23:51:17,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:17,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:17,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:51:17,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -677009235, now seen corresponding path program 1 times [2020-10-26 23:51:17,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:17,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670636429] [2020-10-26 23:51:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:17,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:51:17,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-26 23:51:17,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:51:17,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:51:17,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:17,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:18,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:18,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:51:18,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:51:18,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:51:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:18,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670636429] [2020-10-26 23:51:18,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:18,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:51:18,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887320296] [2020-10-26 23:51:18,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:18,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:18,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:18,192 INFO L87 Difference]: Start difference. First operand 1042 states and 1495 transitions. Second operand 7 states. [2020-10-26 23:51:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:26,508 INFO L93 Difference]: Finished difference Result 3170 states and 4639 transitions. [2020-10-26 23:51:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:51:26,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-26 23:51:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:26,532 INFO L225 Difference]: With dead ends: 3170 [2020-10-26 23:51:26,532 INFO L226 Difference]: Without dead ends: 2134 [2020-10-26 23:51:26,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:51:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2020-10-26 23:51:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2092. [2020-10-26 23:51:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-10-26 23:51:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2713 transitions. [2020-10-26 23:51:26,663 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2713 transitions. Word has length 89 [2020-10-26 23:51:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:26,665 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 2713 transitions. [2020-10-26 23:51:26,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2713 transitions. [2020-10-26 23:51:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-26 23:51:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:26,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:26,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:51:26,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 446743102, now seen corresponding path program 1 times [2020-10-26 23:51:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:26,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248453683] [2020-10-26 23:51:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:29,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-26 23:51:29,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3213 [2020-10-26 23:51:29,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:51:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:51:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:30,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:51:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:30,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:30,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:51:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 23:51:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:51:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:30,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:51:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:30,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:30,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:51:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 23:51:30,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248453683] [2020-10-26 23:51:30,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:30,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:30,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658980007] [2020-10-26 23:51:30,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:51:30,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:51:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:51:30,904 INFO L87 Difference]: Start difference. First operand 2092 states and 2713 transitions. Second operand 8 states. [2020-10-26 23:51:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:37,417 INFO L93 Difference]: Finished difference Result 4919 states and 6619 transitions. [2020-10-26 23:51:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:51:37,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-10-26 23:51:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:37,438 INFO L225 Difference]: With dead ends: 4919 [2020-10-26 23:51:37,438 INFO L226 Difference]: Without dead ends: 2833 [2020-10-26 23:51:37,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:51:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-26 23:51:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2438. [2020-10-26 23:51:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-10-26 23:51:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3191 transitions. [2020-10-26 23:51:37,540 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3191 transitions. Word has length 176 [2020-10-26 23:51:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:37,541 INFO L481 AbstractCegarLoop]: Abstraction has 2438 states and 3191 transitions. [2020-10-26 23:51:37,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:51:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3191 transitions. [2020-10-26 23:51:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-26 23:51:37,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:37,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:37,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:51:37,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:37,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1799628771, now seen corresponding path program 1 times [2020-10-26 23:51:37,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:37,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735693116] [2020-10-26 23:51:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-26 23:51:42,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4576 [2020-10-26 23:51:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:51:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:51:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:42,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:42,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:51:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:51:42,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:51:42,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:51:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:51:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:51:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:51:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-26 23:51:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:51:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:51:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:43,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:43,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:51:43,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:51:43,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:51:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 191 proven. 112 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 23:51:43,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735693116] [2020-10-26 23:51:43,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:43,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:51:43,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717591739] [2020-10-26 23:51:43,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:51:43,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:51:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:51:43,849 INFO L87 Difference]: Start difference. First operand 2438 states and 3191 transitions. Second operand 8 states. [2020-10-26 23:51:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:51,505 INFO L93 Difference]: Finished difference Result 6317 states and 8458 transitions. [2020-10-26 23:51:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:51:51,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 354 [2020-10-26 23:51:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:51,528 INFO L225 Difference]: With dead ends: 6317 [2020-10-26 23:51:51,528 INFO L226 Difference]: Without dead ends: 3504 [2020-10-26 23:51:51,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:51:51,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2020-10-26 23:51:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3475. [2020-10-26 23:51:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3475 states. [2020-10-26 23:51:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 3812 transitions. [2020-10-26 23:51:51,654 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 3812 transitions. Word has length 354 [2020-10-26 23:51:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:51,655 INFO L481 AbstractCegarLoop]: Abstraction has 3475 states and 3812 transitions. [2020-10-26 23:51:51,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:51:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 3812 transitions. [2020-10-26 23:51:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-26 23:51:51,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:51,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:51,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:51:51,663 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1636988961, now seen corresponding path program 1 times [2020-10-26 23:51:51,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:51,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342280723] [2020-10-26 23:51:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:56,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-26 23:51:56,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:51:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:51:56,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:56,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:51:56,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:57,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:51:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:51:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:51:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:51:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:51:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:51:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:51:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:51:57,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342280723] [2020-10-26 23:51:57,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:57,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:57,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677861819] [2020-10-26 23:51:57,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:57,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:57,660 INFO L87 Difference]: Start difference. First operand 3475 states and 3812 transitions. Second operand 7 states. [2020-10-26 23:52:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:01,621 INFO L93 Difference]: Finished difference Result 7664 states and 8399 transitions. [2020-10-26 23:52:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:01,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-26 23:52:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:01,646 INFO L225 Difference]: With dead ends: 7664 [2020-10-26 23:52:01,646 INFO L226 Difference]: Without dead ends: 4195 [2020-10-26 23:52:01,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2020-10-26 23:52:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 4162. [2020-10-26 23:52:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4162 states. [2020-10-26 23:52:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 4526 transitions. [2020-10-26 23:52:01,781 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 4526 transitions. Word has length 357 [2020-10-26 23:52:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:01,782 INFO L481 AbstractCegarLoop]: Abstraction has 4162 states and 4526 transitions. [2020-10-26 23:52:01,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 4526 transitions. [2020-10-26 23:52:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-26 23:52:01,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:01,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:01,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:52:01,796 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:01,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1757659025, now seen corresponding path program 1 times [2020-10-26 23:52:01,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:01,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833790571] [2020-10-26 23:52:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:06,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4860 [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:52:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:52:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:52:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:52:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 23:52:07,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:52:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:52:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:07,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:07,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:52:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:52:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:07,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:07,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 145 proven. 114 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:52:08,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833790571] [2020-10-26 23:52:08,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:08,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:08,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683666611] [2020-10-26 23:52:08,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:08,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:08,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:08,368 INFO L87 Difference]: Start difference. First operand 4162 states and 4526 transitions. Second operand 7 states. [2020-10-26 23:52:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:13,273 INFO L93 Difference]: Finished difference Result 10053 states and 11121 transitions. [2020-10-26 23:52:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:52:13,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-26 23:52:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:13,304 INFO L225 Difference]: With dead ends: 10053 [2020-10-26 23:52:13,304 INFO L226 Difference]: Without dead ends: 6234 [2020-10-26 23:52:13,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2020-10-26 23:52:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5548. [2020-10-26 23:52:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2020-10-26 23:52:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 6006 transitions. [2020-10-26 23:52:13,489 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 6006 transitions. Word has length 496 [2020-10-26 23:52:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:13,491 INFO L481 AbstractCegarLoop]: Abstraction has 5548 states and 6006 transitions. [2020-10-26 23:52:13,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 6006 transitions. [2020-10-26 23:52:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-26 23:52:13,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:13,511 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:13,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:52:13,511 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2098775538, now seen corresponding path program 1 times [2020-10-26 23:52:13,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:13,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585610401] [2020-10-26 23:52:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:18,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-26 23:52:18,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:18,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4727 [2020-10-26 23:52:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:52:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:18,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:52:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:18,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:18,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:18,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:18,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:52:18,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:52:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:19,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:19,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:52:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:19,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 256 proven. 114 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-26 23:52:19,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585610401] [2020-10-26 23:52:19,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:19,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:19,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380919259] [2020-10-26 23:52:19,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:19,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:19,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:19,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:19,876 INFO L87 Difference]: Start difference. First operand 5548 states and 6006 transitions. Second operand 7 states. [2020-10-26 23:52:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:25,164 INFO L93 Difference]: Finished difference Result 15182 states and 16675 transitions. [2020-10-26 23:52:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:52:25,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 604 [2020-10-26 23:52:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:25,212 INFO L225 Difference]: With dead ends: 15182 [2020-10-26 23:52:25,212 INFO L226 Difference]: Without dead ends: 9979 [2020-10-26 23:52:25,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:52:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9979 states. [2020-10-26 23:52:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9979 to 8288. [2020-10-26 23:52:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8288 states. [2020-10-26 23:52:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 9084 transitions. [2020-10-26 23:52:25,525 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 9084 transitions. Word has length 604 [2020-10-26 23:52:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:25,527 INFO L481 AbstractCegarLoop]: Abstraction has 8288 states and 9084 transitions. [2020-10-26 23:52:25,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 9084 transitions. [2020-10-26 23:52:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2020-10-26 23:52:25,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:25,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:25,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:52:25,557 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash -222928463, now seen corresponding path program 1 times [2020-10-26 23:52:25,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:25,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525838227] [2020-10-26 23:52:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:52:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:30,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:30,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:30,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:52:30,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:31,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:52:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:52:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-26 23:52:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:52:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:32,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:52:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 260 proven. 222 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:52:34,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525838227] [2020-10-26 23:52:34,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:34,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:52:34,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612506350] [2020-10-26 23:52:34,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:52:34,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:52:34,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:52:34,870 INFO L87 Difference]: Start difference. First operand 8288 states and 9084 transitions. Second operand 8 states. [2020-10-26 23:52:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:38,911 INFO L93 Difference]: Finished difference Result 16239 states and 17830 transitions. [2020-10-26 23:52:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:52:38,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 624 [2020-10-26 23:52:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:38,947 INFO L225 Difference]: With dead ends: 16239 [2020-10-26 23:52:38,947 INFO L226 Difference]: Without dead ends: 8296 [2020-10-26 23:52:38,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8296 states. [2020-10-26 23:52:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8296 to 8288. [2020-10-26 23:52:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8288 states. [2020-10-26 23:52:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 9082 transitions. [2020-10-26 23:52:39,167 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 9082 transitions. Word has length 624 [2020-10-26 23:52:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:39,168 INFO L481 AbstractCegarLoop]: Abstraction has 8288 states and 9082 transitions. [2020-10-26 23:52:39,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:52:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 9082 transitions. [2020-10-26 23:52:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-10-26 23:52:39,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:39,181 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:39,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:52:39,181 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1423130882, now seen corresponding path program 1 times [2020-10-26 23:52:39,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:39,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063686229] [2020-10-26 23:52:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:44,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-26 23:52:44,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-26 23:52:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:52:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:52:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:45,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:52:45,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:52:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-26 23:52:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:45,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:45,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:45,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 374 proven. 114 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-26 23:52:45,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063686229] [2020-10-26 23:52:45,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:45,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:45,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954200755] [2020-10-26 23:52:45,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:45,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:45,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:45,832 INFO L87 Difference]: Start difference. First operand 8288 states and 9082 transitions. Second operand 7 states. [2020-10-26 23:52:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:50,521 INFO L93 Difference]: Finished difference Result 19985 states and 22109 transitions. [2020-10-26 23:52:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:52:50,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 724 [2020-10-26 23:52:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:50,554 INFO L225 Difference]: With dead ends: 19985 [2020-10-26 23:52:50,555 INFO L226 Difference]: Without dead ends: 11695 [2020-10-26 23:52:50,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11695 states. [2020-10-26 23:52:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11695 to 11015. [2020-10-26 23:52:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11015 states. [2020-10-26 23:52:50,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 12062 transitions. [2020-10-26 23:52:50,796 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 12062 transitions. Word has length 724 [2020-10-26 23:52:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:50,797 INFO L481 AbstractCegarLoop]: Abstraction has 11015 states and 12062 transitions. [2020-10-26 23:52:50,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 12062 transitions. [2020-10-26 23:52:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-26 23:52:50,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:50,810 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:50,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:52:50,810 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:50,814 INFO L82 PathProgramCache]: Analyzing trace with hash 542057897, now seen corresponding path program 1 times [2020-10-26 23:52:50,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:50,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206745283] [2020-10-26 23:52:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 748 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:52:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:56,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:56,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:52:56,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:52:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:52:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:56,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:56,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:52:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-26 23:52:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:52:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-26 23:52:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:52:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:52:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:52:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:57,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-26 23:52:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 196 proven. 307 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-26 23:52:57,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206745283] [2020-10-26 23:52:57,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:57,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:57,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6432340] [2020-10-26 23:52:57,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:57,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:57,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:57,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:57,774 INFO L87 Difference]: Start difference. First operand 11015 states and 12062 transitions. Second operand 7 states. [2020-10-26 23:53:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:03,117 INFO L93 Difference]: Finished difference Result 22373 states and 24499 transitions. [2020-10-26 23:53:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:03,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-26 23:53:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:03,179 INFO L225 Difference]: With dead ends: 22373 [2020-10-26 23:53:03,179 INFO L226 Difference]: Without dead ends: 11703 [2020-10-26 23:53:03,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2020-10-26 23:53:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11025. [2020-10-26 23:53:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11025 states. [2020-10-26 23:53:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11025 states to 11025 states and 12062 transitions. [2020-10-26 23:53:03,463 INFO L78 Accepts]: Start accepts. Automaton has 11025 states and 12062 transitions. Word has length 728 [2020-10-26 23:53:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:03,464 INFO L481 AbstractCegarLoop]: Abstraction has 11025 states and 12062 transitions. [2020-10-26 23:53:03,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 11025 states and 12062 transitions. [2020-10-26 23:53:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-26 23:53:03,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:03,482 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:03,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:53:03,482 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:03,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:03,483 INFO L82 PathProgramCache]: Analyzing trace with hash 683337031, now seen corresponding path program 1 times [2020-10-26 23:53:03,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:03,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911125046] [2020-10-26 23:53:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:08,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:08,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 751 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:53:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:53:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-26 23:53:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-26 23:53:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:53:09,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 298 proven. 181 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2020-10-26 23:53:09,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911125046] [2020-10-26 23:53:09,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:09,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:09,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176685240] [2020-10-26 23:53:09,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:09,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:09,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:09,803 INFO L87 Difference]: Start difference. First operand 11025 states and 12062 transitions. Second operand 7 states. [2020-10-26 23:53:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:14,673 INFO L93 Difference]: Finished difference Result 23400 states and 25875 transitions. [2020-10-26 23:53:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:14,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 731 [2020-10-26 23:53:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:14,714 INFO L225 Difference]: With dead ends: 23400 [2020-10-26 23:53:14,714 INFO L226 Difference]: Without dead ends: 12720 [2020-10-26 23:53:14,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2020-10-26 23:53:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 12375. [2020-10-26 23:53:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12375 states. [2020-10-26 23:53:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 13341 transitions. [2020-10-26 23:53:15,102 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 13341 transitions. Word has length 731 [2020-10-26 23:53:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:15,103 INFO L481 AbstractCegarLoop]: Abstraction has 12375 states and 13341 transitions. [2020-10-26 23:53:15,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 13341 transitions. [2020-10-26 23:53:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-26 23:53:15,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:15,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:15,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:53:15,121 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2079981009, now seen corresponding path program 1 times [2020-10-26 23:53:15,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:15,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148510628] [2020-10-26 23:53:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:53:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:20,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:20,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:20,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:20,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:20,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:53:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:20,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:53:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:53:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:21,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:53:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:53:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:21,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:53:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 298 proven. 195 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2020-10-26 23:53:21,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148510628] [2020-10-26 23:53:21,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:21,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:21,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058803527] [2020-10-26 23:53:21,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:21,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:21,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:21,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:21,802 INFO L87 Difference]: Start difference. First operand 12375 states and 13341 transitions. Second operand 7 states. [2020-10-26 23:53:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:26,742 INFO L93 Difference]: Finished difference Result 27125 states and 29355 transitions. [2020-10-26 23:53:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:53:26,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 818 [2020-10-26 23:53:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:26,802 INFO L225 Difference]: With dead ends: 27125 [2020-10-26 23:53:26,802 INFO L226 Difference]: Without dead ends: 15095 [2020-10-26 23:53:26,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15095 states. [2020-10-26 23:53:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15095 to 15090. [2020-10-26 23:53:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15090 states. [2020-10-26 23:53:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15090 states to 15090 states and 16203 transitions. [2020-10-26 23:53:27,204 INFO L78 Accepts]: Start accepts. Automaton has 15090 states and 16203 transitions. Word has length 818 [2020-10-26 23:53:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:27,205 INFO L481 AbstractCegarLoop]: Abstraction has 15090 states and 16203 transitions. [2020-10-26 23:53:27,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 15090 states and 16203 transitions. [2020-10-26 23:53:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-26 23:53:27,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:27,224 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:27,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:53:27,225 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:27,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1112539499, now seen corresponding path program 1 times [2020-10-26 23:53:27,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:27,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813127336] [2020-10-26 23:53:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:53:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:32,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:32,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:53:32,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:53:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:53:32,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:53:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:53:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:53:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 298 proven. 195 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2020-10-26 23:53:33,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813127336] [2020-10-26 23:53:33,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:33,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:33,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266078756] [2020-10-26 23:53:33,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:33,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:33,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:33,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:33,824 INFO L87 Difference]: Start difference. First operand 15090 states and 16203 transitions. Second operand 7 states. [2020-10-26 23:53:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:38,825 INFO L93 Difference]: Finished difference Result 31861 states and 34598 transitions. [2020-10-26 23:53:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:38,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 820 [2020-10-26 23:53:38,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:38,877 INFO L225 Difference]: With dead ends: 31861 [2020-10-26 23:53:38,877 INFO L226 Difference]: Without dead ends: 17116 [2020-10-26 23:53:38,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17116 states. [2020-10-26 23:53:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17116 to 16775. [2020-10-26 23:53:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16775 states. [2020-10-26 23:53:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16775 states to 16775 states and 17878 transitions. [2020-10-26 23:53:39,202 INFO L78 Accepts]: Start accepts. Automaton has 16775 states and 17878 transitions. Word has length 820 [2020-10-26 23:53:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:39,203 INFO L481 AbstractCegarLoop]: Abstraction has 16775 states and 17878 transitions. [2020-10-26 23:53:39,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 16775 states and 17878 transitions. [2020-10-26 23:53:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-26 23:53:39,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:39,222 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:39,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:53:39,222 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash 801485984, now seen corresponding path program 1 times [2020-10-26 23:53:39,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:39,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322535237] [2020-10-26 23:53:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:39,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:42,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-26 23:53:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2718 [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:53:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:42,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:42,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:42,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:53:42,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:53:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:53:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:53:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:53:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:53:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:43,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:53:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:53:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:43,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:53:43,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:53:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2020-10-26 23:53:43,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322535237] [2020-10-26 23:53:43,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:43,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:43,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472178202] [2020-10-26 23:53:43,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:43,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:43,933 INFO L87 Difference]: Start difference. First operand 16775 states and 17878 transitions. Second operand 7 states. [2020-10-26 23:53:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:48,865 INFO L93 Difference]: Finished difference Result 34226 states and 36571 transitions. [2020-10-26 23:53:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:53:48,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-26 23:53:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:48,904 INFO L225 Difference]: With dead ends: 34226 [2020-10-26 23:53:48,905 INFO L226 Difference]: Without dead ends: 17455 [2020-10-26 23:53:48,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:53:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17455 states. [2020-10-26 23:53:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17455 to 17108. [2020-10-26 23:53:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17108 states. [2020-10-26 23:53:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17108 states to 17108 states and 17918 transitions. [2020-10-26 23:53:49,227 INFO L78 Accepts]: Start accepts. Automaton has 17108 states and 17918 transitions. Word has length 865 [2020-10-26 23:53:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:49,228 INFO L481 AbstractCegarLoop]: Abstraction has 17108 states and 17918 transitions. [2020-10-26 23:53:49,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 17108 states and 17918 transitions. [2020-10-26 23:53:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-26 23:53:49,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:49,250 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:49,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:53:49,250 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:49,251 INFO L82 PathProgramCache]: Analyzing trace with hash 649155261, now seen corresponding path program 1 times [2020-10-26 23:53:49,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:49,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761239552] [2020-10-26 23:53:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 953 [2020-10-26 23:53:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 938 [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 23:53:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:51,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:53:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:53:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-26 23:53:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-26 23:53:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:52,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:52,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:52,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:52,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:53:52,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 23:53:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2020-10-26 23:53:52,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761239552] [2020-10-26 23:53:52,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:52,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:53:52,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722227424] [2020-10-26 23:53:52,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:53:52,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:53:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:53:52,681 INFO L87 Difference]: Start difference. First operand 17108 states and 17918 transitions. Second operand 5 states. [2020-10-26 23:53:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:56,440 INFO L93 Difference]: Finished difference Result 33534 states and 35139 transitions. [2020-10-26 23:53:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:53:56,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 933 [2020-10-26 23:53:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:56,480 INFO L225 Difference]: With dead ends: 33534 [2020-10-26 23:53:56,481 INFO L226 Difference]: Without dead ends: 16771 [2020-10-26 23:53:56,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:53:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2020-10-26 23:53:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16430. [2020-10-26 23:53:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16430 states. [2020-10-26 23:53:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16430 states to 16430 states and 17059 transitions. [2020-10-26 23:53:56,805 INFO L78 Accepts]: Start accepts. Automaton has 16430 states and 17059 transitions. Word has length 933 [2020-10-26 23:53:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:56,806 INFO L481 AbstractCegarLoop]: Abstraction has 16430 states and 17059 transitions. [2020-10-26 23:53:56,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:53:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16430 states and 17059 transitions. [2020-10-26 23:53:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2020-10-26 23:53:57,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:57,024 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:53:57,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:53:57,025 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:57,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1524236923, now seen corresponding path program 1 times [2020-10-26 23:53:57,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:57,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726318793] [2020-10-26 23:53:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:54:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:54:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:02,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:54:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:54:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:54:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:54:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:03,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:54:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:54:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:54:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:03,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-26 23:54:03,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:54:03,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-26 23:54:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3075 backedges. 893 proven. 169 refuted. 0 times theorem prover too weak. 2013 trivial. 0 not checked. [2020-10-26 23:54:05,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726318793] [2020-10-26 23:54:05,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:05,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:05,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248259882] [2020-10-26 23:54:05,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:05,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:05,369 INFO L87 Difference]: Start difference. First operand 16430 states and 17059 transitions. Second operand 7 states. [2020-10-26 23:54:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:10,233 INFO L93 Difference]: Finished difference Result 32525 states and 33785 transitions. [2020-10-26 23:54:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:10,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1289 [2020-10-26 23:54:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:10,263 INFO L225 Difference]: With dead ends: 32525 [2020-10-26 23:54:10,263 INFO L226 Difference]: Without dead ends: 16440 [2020-10-26 23:54:10,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2020-10-26 23:54:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 16430. [2020-10-26 23:54:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16430 states. [2020-10-26 23:54:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16430 states to 16430 states and 17051 transitions. [2020-10-26 23:54:10,543 INFO L78 Accepts]: Start accepts. Automaton has 16430 states and 17051 transitions. Word has length 1289 [2020-10-26 23:54:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:10,544 INFO L481 AbstractCegarLoop]: Abstraction has 16430 states and 17051 transitions. [2020-10-26 23:54:10,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 16430 states and 17051 transitions. [2020-10-26 23:54:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1426 [2020-10-26 23:54:10,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:10,584 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:10,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:54:10,585 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash -947231971, now seen corresponding path program 1 times [2020-10-26 23:54:10,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:10,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676976993] [2020-10-26 23:54:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1453 [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:54:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:54:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:16,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:54:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:54:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:54:16,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:54:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:54:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:54:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:54:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:17,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-26 23:54:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:17,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-26 23:54:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-26 23:54:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 525 proven. 242 refuted. 0 times theorem prover too weak. 3747 trivial. 0 not checked. [2020-10-26 23:54:18,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676976993] [2020-10-26 23:54:18,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:18,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:18,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226906380] [2020-10-26 23:54:18,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:18,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:18,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:18,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:18,494 INFO L87 Difference]: Start difference. First operand 16430 states and 17051 transitions. Second operand 7 states.