/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:28:35,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:28:35,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:28:35,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:28:35,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:28:35,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:28:35,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:28:35,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:28:35,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:28:35,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:28:35,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:28:35,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:28:35,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:28:35,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:28:35,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:28:35,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:28:35,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:28:35,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:28:35,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:28:35,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:28:35,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:28:35,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:28:35,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:28:35,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:28:35,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:28:35,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:28:35,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:28:35,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:28:35,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:28:35,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:28:35,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:28:35,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:28:35,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:28:35,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:28:35,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:28:35,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:28:35,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:28:35,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:28:35,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:28:35,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:28:35,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:28:35,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:28:35,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:28:35,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:28:35,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:28:35,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:28:35,463 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:28:35,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:28:35,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:28:35,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:28:35,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:28:35,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:28:35,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:28:35,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:28:35,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:28:35,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:28:35,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:28:35,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:28:35,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:28:35,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:28:35,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:28:35,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:28:35,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:28:35,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:28:35,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:28:35,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:28:35,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:28:35,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:28:35,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:28:35,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:28:35,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:28:35,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:28:35,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:28:35,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:28:35,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:28:35,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:28:35,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:28:35,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label39.c [2020-10-29 05:28:36,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37829a7a0/3d690bb59d4945ae9c6cadb31b4bb581/FLAGe8bd070e8 [2020-10-29 05:28:37,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:28:37,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label39.c [2020-10-29 05:28:37,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37829a7a0/3d690bb59d4945ae9c6cadb31b4bb581/FLAGe8bd070e8 [2020-10-29 05:28:37,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37829a7a0/3d690bb59d4945ae9c6cadb31b4bb581 [2020-10-29 05:28:37,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:28:37,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:28:37,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:28:37,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:28:37,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:28:37,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:28:37" (1/1) ... [2020-10-29 05:28:37,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf1f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:37, skipping insertion in model container [2020-10-29 05:28:37,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:28:37" (1/1) ... [2020-10-29 05:28:37,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:28:37,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:28:39,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:28:39,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:28:41,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:28:41,266 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:28:41,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41 WrapperNode [2020-10-29 05:28:41,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:28:41,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:28:41,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:28:41,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:28:41,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... [2020-10-29 05:28:41,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:28:41,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:28:41,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:28:41,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:28:41,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:28:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:28:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:28:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:28:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:28:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:28:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:28:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:28:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:28:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:28:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:28:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:28:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:28:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:28:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:28:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:28:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:28:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:28:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:28:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:28:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:28:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:28:51,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:28:51,774 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:28:51,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:28:51 BoogieIcfgContainer [2020-10-29 05:28:51,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:28:51,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:28:51,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:28:51,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:28:51,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:28:37" (1/3) ... [2020-10-29 05:28:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de7391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:28:51, skipping insertion in model container [2020-10-29 05:28:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:28:41" (2/3) ... [2020-10-29 05:28:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de7391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:28:51, skipping insertion in model container [2020-10-29 05:28:51,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:28:51" (3/3) ... [2020-10-29 05:28:51,789 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label39.c [2020-10-29 05:28:51,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:28:51,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:28:51,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:28:51,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:28:51,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:28:51,859 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:28:51,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:28:51,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:28:51,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:28:51,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:28:51,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:28:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:28:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1665 [2020-10-29 05:28:52,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:28:52,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:28:52,075 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:28:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:28:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2005052167, now seen corresponding path program 1 times [2020-10-29 05:28:52,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:28:52,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059305518] [2020-10-29 05:28:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:28:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:58,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1688 [2020-10-29 05:28:58,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 05:28:58,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:58,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:28:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:28:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1679 [2020-10-29 05:28:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:28:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:28:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:59,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:59,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:28:59,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:28:59,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:59,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:28:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:28:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:29:03,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059305518] [2020-10-29 05:29:03,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:29:03,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:29:03,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868239916] [2020-10-29 05:29:03,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:29:03,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:29:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:29:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:29:03,081 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:29:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:29:25,203 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-29 05:29:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:29:25,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1664 [2020-10-29 05:29:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:29:25,284 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:29:25,284 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:29:25,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:29:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:29:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-29 05:29:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-29 05:29:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-29 05:29:25,541 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1664 [2020-10-29 05:29:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:29:25,546 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-29 05:29:25,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:29:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-29 05:29:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-29 05:29:25,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:29:25,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:29:25,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:29:25,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:29:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:29:25,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1945649153, now seen corresponding path program 1 times [2020-10-29 05:29:25,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:29:25,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089653273] [2020-10-29 05:29:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:29:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:31,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:31,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1701 [2020-10-29 05:29:31,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:29:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-29 05:29:31,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:31,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:29:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:29:31,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1676 [2020-10-29 05:29:31,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:29:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:29:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:29:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:32,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:29:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:29:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:29:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:32,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:29:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:29:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:32,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:29:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:29:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:29:35,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089653273] [2020-10-29 05:29:35,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:29:35,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:29:35,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171867481] [2020-10-29 05:29:35,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:29:35,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:29:35,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:29:35,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:29:35,263 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 5 states. [2020-10-29 05:30:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:30:00,486 INFO L93 Difference]: Finished difference Result 11599 states and 19034 transitions. [2020-10-29 05:30:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:30:00,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1675 [2020-10-29 05:30:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:30:00,532 INFO L225 Difference]: With dead ends: 11599 [2020-10-29 05:30:00,533 INFO L226 Difference]: Without dead ends: 7600 [2020-10-29 05:30:00,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:30:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2020-10-29 05:30:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7557. [2020-10-29 05:30:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7557 states. [2020-10-29 05:30:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10688 transitions. [2020-10-29 05:30:00,853 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 10688 transitions. Word has length 1675 [2020-10-29 05:30:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:30:00,856 INFO L481 AbstractCegarLoop]: Abstraction has 7557 states and 10688 transitions. [2020-10-29 05:30:00,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:30:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 10688 transitions. [2020-10-29 05:30:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2020-10-29 05:30:00,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:30:00,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:30:00,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:30:00,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:30:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:30:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash -926401917, now seen corresponding path program 1 times [2020-10-29 05:30:00,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:30:00,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351032936] [2020-10-29 05:30:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:30:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:06,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1702 [2020-10-29 05:30:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:30:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:30:06,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:06,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:30:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:30:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:30:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:30:11,249 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-29 05:30:11,442 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-29 05:30:11,752 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 45 [2020-10-29 05:30:11,954 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-10-29 05:30:12,153 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-29 05:30:12,336 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-29 05:30:12,649 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2020-10-29 05:30:12,835 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-29 05:30:13,550 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-29 05:30:13,758 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-29 05:30:14,058 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2020-10-29 05:30:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:30:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:14,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:30:14,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:14,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:30:14,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:14,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:30:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:30:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:30:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:14,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:30:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:30:14,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:14,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:30:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:14,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:30:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:30:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:30:40,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351032936] [2020-10-29 05:30:40,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:30:40,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:30:40,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379306766] [2020-10-29 05:30:40,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:30:40,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:30:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:30:40,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:30:40,042 INFO L87 Difference]: Start difference. First operand 7557 states and 10688 transitions. Second operand 23 states. [2020-10-29 05:30:40,556 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:30:40,819 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:30:44,767 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-29 05:30:48,081 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-10-29 05:30:50,530 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:30:50,800 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:30:52,132 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-10-29 05:30:55,795 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-29 05:31:00,552 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:31:00,821 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:31:09,459 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:31:09,704 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:31:18,694 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:31:18,945 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:31:27,864 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:31:28,139 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:31:32,544 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2020-10-29 05:31:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:31:42,848 INFO L93 Difference]: Finished difference Result 16429 states and 23997 transitions. [2020-10-29 05:31:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:31:42,850 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1676 [2020-10-29 05:31:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:31:42,893 INFO L225 Difference]: With dead ends: 16429 [2020-10-29 05:31:42,893 INFO L226 Difference]: Without dead ends: 8878 [2020-10-29 05:31:42,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:31:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8878 states. [2020-10-29 05:31:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8878 to 8848. [2020-10-29 05:31:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2020-10-29 05:31:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 11999 transitions. [2020-10-29 05:31:43,200 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 11999 transitions. Word has length 1676 [2020-10-29 05:31:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:31:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 8848 states and 11999 transitions. [2020-10-29 05:31:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:31:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 11999 transitions. [2020-10-29 05:31:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-29 05:31:43,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:43,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:43,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:31:43,252 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2042573432, now seen corresponding path program 1 times [2020-10-29 05:31:43,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:43,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577819540] [2020-10-29 05:31:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-29 05:31:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:31:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 979 [2020-10-29 05:31:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:53,185 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-29 05:31:53,366 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-29 05:31:53,636 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-29 05:31:53,824 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-29 05:31:54,020 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-29 05:31:54,206 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-29 05:31:54,393 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-29 05:31:54,556 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-29 05:31:54,754 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-29 05:31:54,959 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-29 05:31:55,265 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-10-29 05:31:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:55,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:55,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:55,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:31:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:31:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:56,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:56,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:31:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:32:13,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577819540] [2020-10-29 05:32:13,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:32:13,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 05:32:13,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463880399] [2020-10-29 05:32:13,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 05:32:13,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:32:13,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 05:32:13,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-29 05:32:13,354 INFO L87 Difference]: Start difference. First operand 8848 states and 11999 transitions. Second operand 21 states. [2020-10-29 05:32:13,995 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:14,252 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 113