/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/Problem18_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:21:32,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:21:32,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:21:32,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:21:32,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:21:32,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:21:32,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:21:32,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:21:32,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:21:32,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:21:32,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:21:32,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:21:32,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:21:32,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:21:32,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:21:32,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:21:32,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:21:32,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:21:32,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:21:32,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:21:32,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:21:32,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:21:32,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:21:32,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:21:32,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:21:32,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:21:32,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:21:32,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:21:32,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:21:32,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:21:32,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:21:32,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:21:32,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:21:32,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:21:32,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:21:32,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:21:32,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:21:32,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:21:32,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:21:32,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:21:32,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:21:32,399 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 [2020-10-27 00:21:32,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:21:32,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:21:32,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:21:32,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:21:32,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:21:32,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:21:32,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:21:32,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:21:32,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:21:32,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:21:32,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:21:32,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:21:32,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:21:32,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:21:32,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:21:32,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:21:32,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:21:32,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:21:32,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:21:32,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:21:32,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:21:32,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:21:32,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:21:32,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:21:32,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:21:32,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:21:32,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:21:32,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:21:32,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:21:32,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:21:32,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:21:32,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:21:32,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:21:32,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:21:32,990 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:21:32,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01.c [2020-10-27 00:21:33,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25273aacc/ba694761575c4dd9b42324a5bd803cd5/FLAG8d455602c [2020-10-27 00:21:34,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:21:34,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label01.c [2020-10-27 00:21:34,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25273aacc/ba694761575c4dd9b42324a5bd803cd5/FLAG8d455602c [2020-10-27 00:21:34,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25273aacc/ba694761575c4dd9b42324a5bd803cd5 [2020-10-27 00:21:34,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:21:34,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:21:34,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:34,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:21:34,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:21:34,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:34" (1/1) ... [2020-10-27 00:21:34,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:34, skipping insertion in model container [2020-10-27 00:21:34,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:34" (1/1) ... [2020-10-27 00:21:34,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:21:34,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:21:36,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:36,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:21:36,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:36,643 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:21:36,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36 WrapperNode [2020-10-27 00:21:36,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:36,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:21:36,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:21:36,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:21:36,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (1/1) ... [2020-10-27 00:21:36,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:21:36,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:21:36,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:21:36,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:21:36,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (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 [2020-10-27 00:21:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:21:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:21:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:21:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:21:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:21:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:21:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:21:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:21:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:21:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:21:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:21:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:21:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:21:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:21:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:21:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:21:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:21:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:21:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:21:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:21:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:21:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:21:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:21:41,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:21:41,396 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:21:41,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:41 BoogieIcfgContainer [2020-10-27 00:21:41,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:21:41,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:21:41,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:21:41,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:21:41,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:21:34" (1/3) ... [2020-10-27 00:21:41,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:41, skipping insertion in model container [2020-10-27 00:21:41,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:36" (2/3) ... [2020-10-27 00:21:41,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:41, skipping insertion in model container [2020-10-27 00:21:41,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:41" (3/3) ... [2020-10-27 00:21:41,417 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label01.c [2020-10-27 00:21:41,433 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:21:41,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:21:41,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:21:41,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:21:41,503 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:21:41,503 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:21:41,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:21:41,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:21:41,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:21:41,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:21:41,504 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:21:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:21:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 00:21:41,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:41,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:21:41,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2054715776, now seen corresponding path program 1 times [2020-10-27 00:21:41,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:41,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856818752] [2020-10-27 00:21:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:42,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:42,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 00:21:42,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-27 00:21:42,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 00:21:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:21:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:21:42,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:21:42,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856818752] [2020-10-27 00:21:42,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:42,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:21:42,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390740033] [2020-10-27 00:21:42,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:21:42,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:21:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:21:42,769 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:21:52,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:21:52,923 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:21:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:21:52,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 00:21:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:21:52,964 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:21:52,965 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:21:52,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:21:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:21:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:21:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:21:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 00:21:53,170 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 33 [2020-10-27 00:21:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:21:53,171 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 00:21:53,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:21:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 00:21:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 00:21:53,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:53,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:21:53,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:21:53,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash -464273031, now seen corresponding path program 1 times [2020-10-27 00:21:53,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:53,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365378194] [2020-10-27 00:21:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 00:21:54,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:21:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-27 00:21:54,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:21:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:21:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:21:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:54,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:21:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:21:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:21:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:21:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:21:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:21:54,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365378194] [2020-10-27 00:21:54,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:54,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:21:54,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840171433] [2020-10-27 00:21:54,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:21:54,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:54,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:21:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:21:54,847 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-27 00:22:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:08,183 INFO L93 Difference]: Finished difference Result 4331 states and 6792 transitions. [2020-10-27 00:22:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:22:08,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-27 00:22:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:08,205 INFO L225 Difference]: With dead ends: 4331 [2020-10-27 00:22:08,206 INFO L226 Difference]: Without dead ends: 2911 [2020-10-27 00:22:08,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:22:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-10-27 00:22:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2867. [2020-10-27 00:22:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-10-27 00:22:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3952 transitions. [2020-10-27 00:22:08,328 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3952 transitions. Word has length 103 [2020-10-27 00:22:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:08,329 INFO L481 AbstractCegarLoop]: Abstraction has 2867 states and 3952 transitions. [2020-10-27 00:22:08,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3952 transitions. [2020-10-27 00:22:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 00:22:08,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:08,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:08,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:22:08,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1672612903, now seen corresponding path program 1 times [2020-10-27 00:22:08,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:08,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587146532] [2020-10-27 00:22:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:09,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 00:22:09,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-27 00:22:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:22:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:22:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:22:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:10,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:22:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:22:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:22:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:10,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587146532] [2020-10-27 00:22:10,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:22:10,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:22:10,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125577686] [2020-10-27 00:22:10,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:10,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:10,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:10,607 INFO L87 Difference]: Start difference. First operand 2867 states and 3952 transitions. Second operand 7 states. [2020-10-27 00:22:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:21,763 INFO L93 Difference]: Finished difference Result 5141 states and 7179 transitions. [2020-10-27 00:22:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:22:21,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-27 00:22:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:21,791 INFO L225 Difference]: With dead ends: 5141 [2020-10-27 00:22:21,791 INFO L226 Difference]: Without dead ends: 3700 [2020-10-27 00:22:21,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:22:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-10-27 00:22:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3594. [2020-10-27 00:22:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-27 00:22:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4743 transitions. [2020-10-27 00:22:21,935 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4743 transitions. Word has length 130 [2020-10-27 00:22:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:21,936 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 4743 transitions. [2020-10-27 00:22:21,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4743 transitions. [2020-10-27 00:22:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 00:22:21,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:21,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:21,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:22:21,940 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1040268311, now seen corresponding path program 1 times [2020-10-27 00:22:21,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:21,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519638689] [2020-10-27 00:22:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:22,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 00:22:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-27 00:22:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:22:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 00:22:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:22,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:22:22,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:22:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:23,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 00:22:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:22:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:22:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:23,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519638689] [2020-10-27 00:22:23,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:22:23,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:22:23,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91009744] [2020-10-27 00:22:23,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:23,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:23,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:23,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:23,249 INFO L87 Difference]: Start difference. First operand 3594 states and 4743 transitions. Second operand 7 states. [2020-10-27 00:22:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:35,906 INFO L93 Difference]: Finished difference Result 8835 states and 12111 transitions. [2020-10-27 00:22:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:22:35,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-27 00:22:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:35,939 INFO L225 Difference]: With dead ends: 8835 [2020-10-27 00:22:35,944 INFO L226 Difference]: Without dead ends: 5247 [2020-10-27 00:22:35,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:22:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2020-10-27 00:22:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 5048. [2020-10-27 00:22:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5048 states. [2020-10-27 00:22:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 6150 transitions. [2020-10-27 00:22:36,133 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 6150 transitions. Word has length 138 [2020-10-27 00:22:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:36,135 INFO L481 AbstractCegarLoop]: Abstraction has 5048 states and 6150 transitions. [2020-10-27 00:22:36,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 6150 transitions. [2020-10-27 00:22:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-27 00:22:36,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:36,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:36,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:22:36,141 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -895325343, now seen corresponding path program 1 times [2020-10-27 00:22:36,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:36,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661124266] [2020-10-27 00:22:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:36,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 00:22:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 00:22:36,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:22:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 00:22:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:36,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:36,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:22:36,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:22:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 00:22:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:22:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:37,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661124266] [2020-10-27 00:22:37,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:37,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:22:37,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462197642] [2020-10-27 00:22:37,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:22:37,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:37,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:22:37,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:22:37,228 INFO L87 Difference]: Start difference. First operand 5048 states and 6150 transitions. Second operand 5 states. [2020-10-27 00:22:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:49,969 INFO L93 Difference]: Finished difference Result 11588 states and 14940 transitions. [2020-10-27 00:22:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:22:49,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-27 00:22:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:50,011 INFO L225 Difference]: With dead ends: 11588 [2020-10-27 00:22:50,012 INFO L226 Difference]: Without dead ends: 7248 [2020-10-27 00:22:50,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:22:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2020-10-27 00:22:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 7231. [2020-10-27 00:22:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7231 states. [2020-10-27 00:22:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 8813 transitions. [2020-10-27 00:22:50,238 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 8813 transitions. Word has length 219 [2020-10-27 00:22:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:50,239 INFO L481 AbstractCegarLoop]: Abstraction has 7231 states and 8813 transitions. [2020-10-27 00:22:50,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:22:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 8813 transitions. [2020-10-27 00:22:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 00:22:50,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:50,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:50,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:22:50,248 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:50,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1036653438, now seen corresponding path program 1 times [2020-10-27 00:22:50,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:50,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386775753] [2020-10-27 00:22:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-27 00:22:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:22:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-27 00:22:52,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:22:52,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:22:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:22:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:52,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:52,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:52,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:22:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:22:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:22:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:22:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:52,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:52,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:22:52,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:52,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 00:22:52,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:22:52,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:22:53,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386775753] [2020-10-27 00:22:53,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:53,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:22:53,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482911571] [2020-10-27 00:22:53,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:53,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:53,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:53,442 INFO L87 Difference]: Start difference. First operand 7231 states and 8813 transitions. Second operand 7 states. [2020-10-27 00:23:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:08,638 INFO L93 Difference]: Finished difference Result 14614 states and 18230 transitions. [2020-10-27 00:23:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:23:08,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-27 00:23:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:08,676 INFO L225 Difference]: With dead ends: 14614 [2020-10-27 00:23:08,676 INFO L226 Difference]: Without dead ends: 7317 [2020-10-27 00:23:08,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:23:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2020-10-27 00:23:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 7292. [2020-10-27 00:23:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7292 states. [2020-10-27 00:23:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 8156 transitions. [2020-10-27 00:23:08,871 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 8156 transitions. Word has length 341 [2020-10-27 00:23:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:08,871 INFO L481 AbstractCegarLoop]: Abstraction has 7292 states and 8156 transitions. [2020-10-27 00:23:08,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:23:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 8156 transitions. [2020-10-27 00:23:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-27 00:23:08,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:08,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:08,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:23:08,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:08,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1293092336, now seen corresponding path program 1 times [2020-10-27 00:23:08,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:08,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304464260] [2020-10-27 00:23:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-27 00:23:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:23:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:14,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:14,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:14,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:23:14,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:23:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:23:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:14,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:23:14,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 00:23:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:23:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:23:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:23:15,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:23:15,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:23:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:23:15,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:23:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:23:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 50 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:23:15,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304464260] [2020-10-27 00:23:15,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:15,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:23:15,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242479555] [2020-10-27 00:23:15,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:23:15,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:15,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:23:15,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:23:15,647 INFO L87 Difference]: Start difference. First operand 7292 states and 8156 transitions. Second operand 8 states. [2020-10-27 00:23:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:26,238 INFO L93 Difference]: Finished difference Result 17733 states and 20265 transitions. [2020-10-27 00:23:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:23:26,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 430 [2020-10-27 00:23:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:26,281 INFO L225 Difference]: With dead ends: 17733 [2020-10-27 00:23:26,282 INFO L226 Difference]: Without dead ends: 11149 [2020-10-27 00:23:26,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:23:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2020-10-27 00:23:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 10991. [2020-10-27 00:23:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10991 states. [2020-10-27 00:23:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10991 states to 10991 states and 12260 transitions. [2020-10-27 00:23:26,610 INFO L78 Accepts]: Start accepts. Automaton has 10991 states and 12260 transitions. Word has length 430 [2020-10-27 00:23:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:26,611 INFO L481 AbstractCegarLoop]: Abstraction has 10991 states and 12260 transitions. [2020-10-27 00:23:26,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:23:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 10991 states and 12260 transitions. [2020-10-27 00:23:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-27 00:23:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:26,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:26,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:23:26,645 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash 564220943, now seen corresponding path program 1 times [2020-10-27 00:23:26,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:26,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204988631] [2020-10-27 00:23:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:31,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:31,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-27 00:23:31,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:23:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-27 00:23:31,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:23:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:23:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:23:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:31,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:31,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:31,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:23:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:23:31,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:32,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:23:32,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:23:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:23:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:23:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:32,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:32,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:23:32,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:32,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:23:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:32,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:32,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:23:32,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:23:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:23:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:23:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:23:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:33,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:23:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:23:33,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204988631] [2020-10-27 00:23:33,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:33,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:23:33,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008363228] [2020-10-27 00:23:33,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:23:33,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:23:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:23:33,726 INFO L87 Difference]: Start difference. First operand 10991 states and 12260 transitions. Second operand 7 states. [2020-10-27 00:23:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:42,536 INFO L93 Difference]: Finished difference Result 28724 states and 33115 transitions. [2020-10-27 00:23:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:23:42,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 957 [2020-10-27 00:23:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:42,666 INFO L225 Difference]: With dead ends: 28724 [2020-10-27 00:23:42,666 INFO L226 Difference]: Without dead ends: 19151 [2020-10-27 00:23:42,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:23:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19151 states. [2020-10-27 00:23:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19151 to 19041. [2020-10-27 00:23:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19041 states. [2020-10-27 00:23:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19041 states to 19041 states and 21378 transitions. [2020-10-27 00:23:43,071 INFO L78 Accepts]: Start accepts. Automaton has 19041 states and 21378 transitions. Word has length 957 [2020-10-27 00:23:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:43,073 INFO L481 AbstractCegarLoop]: Abstraction has 19041 states and 21378 transitions. [2020-10-27 00:23:43,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:23:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 19041 states and 21378 transitions. [2020-10-27 00:23:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-27 00:23:43,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:43,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:43,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:23:43,124 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2060516273, now seen corresponding path program 1 times [2020-10-27 00:23:43,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:43,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4356316] [2020-10-27 00:23:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:23:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:23:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:48,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:23:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:23:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:49,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:49,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:23:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:23:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:23:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:49,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:23:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:49,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:23:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:23:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:23:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:23:50,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4356316] [2020-10-27 00:23:50,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:50,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:23:50,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435054011] [2020-10-27 00:23:50,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:23:50,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:23:50,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:23:50,711 INFO L87 Difference]: Start difference. First operand 19041 states and 21378 transitions. Second operand 7 states. [2020-10-27 00:24:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:01,017 INFO L93 Difference]: Finished difference Result 42634 states and 49010 transitions. [2020-10-27 00:24:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:24:01,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-27 00:24:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:01,086 INFO L225 Difference]: With dead ends: 42634 [2020-10-27 00:24:01,086 INFO L226 Difference]: Without dead ends: 25011 [2020-10-27 00:24:01,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:24:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2020-10-27 00:24:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 24896. [2020-10-27 00:24:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24896 states. [2020-10-27 00:24:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24896 states to 24896 states and 28030 transitions. [2020-10-27 00:24:01,585 INFO L78 Accepts]: Start accepts. Automaton has 24896 states and 28030 transitions. Word has length 989 [2020-10-27 00:24:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:01,587 INFO L481 AbstractCegarLoop]: Abstraction has 24896 states and 28030 transitions. [2020-10-27 00:24:01,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 24896 states and 28030 transitions. [2020-10-27 00:24:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-27 00:24:01,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:01,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:01,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:24:01,601 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:01,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash -973429742, now seen corresponding path program 1 times [2020-10-27 00:24:01,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:01,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958878746] [2020-10-27 00:24:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4587 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:24:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:06,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:06,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:06,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:06,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:07,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:24:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:24:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:24:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:24:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:24:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:24:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-27 00:24:08,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958878746] [2020-10-27 00:24:08,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:08,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:08,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335857039] [2020-10-27 00:24:08,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:08,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:08,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:08,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:08,711 INFO L87 Difference]: Start difference. First operand 24896 states and 28030 transitions. Second operand 7 states. [2020-10-27 00:24:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:17,672 INFO L93 Difference]: Finished difference Result 56977 states and 64425 transitions. [2020-10-27 00:24:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:24:17,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-27 00:24:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:17,757 INFO L225 Difference]: With dead ends: 56977 [2020-10-27 00:24:17,758 INFO L226 Difference]: Without dead ends: 33499 [2020-10-27 00:24:17,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:24:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33499 states. [2020-10-27 00:24:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33499 to 31323. [2020-10-27 00:24:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31323 states. [2020-10-27 00:24:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31323 states to 31323 states and 35384 transitions. [2020-10-27 00:24:18,375 INFO L78 Accepts]: Start accepts. Automaton has 31323 states and 35384 transitions. Word has length 996 [2020-10-27 00:24:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:18,376 INFO L481 AbstractCegarLoop]: Abstraction has 31323 states and 35384 transitions. [2020-10-27 00:24:18,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 31323 states and 35384 transitions. [2020-10-27 00:24:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-27 00:24:18,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:18,392 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:18,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:24:18,392 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash -889751320, now seen corresponding path program 1 times [2020-10-27 00:24:18,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:18,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578385683] [2020-10-27 00:24:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1124 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:24:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:23,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:24:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:24:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:24:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:24:24,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578385683] [2020-10-27 00:24:24,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:24,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:24,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797601660] [2020-10-27 00:24:24,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:24,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:24,668 INFO L87 Difference]: Start difference. First operand 31323 states and 35384 transitions. Second operand 7 states. [2020-10-27 00:24:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:36,532 INFO L93 Difference]: Finished difference Result 68452 states and 78839 transitions. [2020-10-27 00:24:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:24:36,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1100 [2020-10-27 00:24:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:36,632 INFO L225 Difference]: With dead ends: 68452 [2020-10-27 00:24:36,632 INFO L226 Difference]: Without dead ends: 38547 [2020-10-27 00:24:36,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:24:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38547 states. [2020-10-27 00:24:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38547 to 37788. [2020-10-27 00:24:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37788 states. [2020-10-27 00:24:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37788 states to 37788 states and 42950 transitions. [2020-10-27 00:24:37,378 INFO L78 Accepts]: Start accepts. Automaton has 37788 states and 42950 transitions. Word has length 1100 [2020-10-27 00:24:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:37,379 INFO L481 AbstractCegarLoop]: Abstraction has 37788 states and 42950 transitions. [2020-10-27 00:24:37,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 37788 states and 42950 transitions. [2020-10-27 00:24:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-27 00:24:37,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:37,394 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:37,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:24:37,395 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 290579470, now seen corresponding path program 1 times [2020-10-27 00:24:37,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:37,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002461366] [2020-10-27 00:24:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 00:24:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:39,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:24:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:24:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:24:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:40,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:24:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:24:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:24:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:24:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002461366] [2020-10-27 00:24:40,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:40,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:24:40,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524104443] [2020-10-27 00:24:40,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:24:40,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:40,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:24:40,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:24:40,857 INFO L87 Difference]: Start difference. First operand 37788 states and 42950 transitions. Second operand 5 states. [2020-10-27 00:24:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:50,891 INFO L93 Difference]: Finished difference Result 82621 states and 95467 transitions. [2020-10-27 00:24:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:24:50,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1121 [2020-10-27 00:24:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:51,023 INFO L225 Difference]: With dead ends: 82621 [2020-10-27 00:24:51,023 INFO L226 Difference]: Without dead ends: 46251 [2020-10-27 00:24:51,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:24:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46251 states. [2020-10-27 00:24:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46251 to 46225. [2020-10-27 00:24:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46225 states. [2020-10-27 00:24:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46225 states to 46225 states and 51918 transitions. [2020-10-27 00:24:51,827 INFO L78 Accepts]: Start accepts. Automaton has 46225 states and 51918 transitions. Word has length 1121 [2020-10-27 00:24:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:51,829 INFO L481 AbstractCegarLoop]: Abstraction has 46225 states and 51918 transitions. [2020-10-27 00:24:51,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:24:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 46225 states and 51918 transitions. [2020-10-27 00:24:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-27 00:24:51,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:51,847 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:51,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:24:51,847 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1490257192, now seen corresponding path program 1 times [2020-10-27 00:24:51,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:51,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090177058] [2020-10-27 00:24:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1156 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4008 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:24:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:24:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:24:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:24:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:24:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:24:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 467 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:24:58,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090177058] [2020-10-27 00:24:58,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:58,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:24:58,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769973020] [2020-10-27 00:24:58,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:24:58,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:58,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:24:58,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:24:58,104 INFO L87 Difference]: Start difference. First operand 46225 states and 51918 transitions. Second operand 8 states.