/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:33:06,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:33:06,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:33:06,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:33:06,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:33:06,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:33:06,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:33:06,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:33:06,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:33:06,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:33:06,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:33:06,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:33:06,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:33:06,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:33:06,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:33:06,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:33:06,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:33:06,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:33:06,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:33:06,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:33:06,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:33:06,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:33:06,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:33:06,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:33:06,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:33:06,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:33:06,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:33:06,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:33:06,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:33:06,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:33:06,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:33:06,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:33:06,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:33:06,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:33:06,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:33:06,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:33:06,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:33:06,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:33:06,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:33:06,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:33:06,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:33:06,393 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 05:33:06,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:33:06,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:33:06,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:33:06,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:33:06,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:33:06,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:33:06,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:33:06,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:33:06,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:33:06,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:33:06,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:33:06,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:33:06,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:33:06,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:33:06,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:33:06,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:33:06,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:33:06,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:33:06,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:33:06,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:33:06,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:33:06,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:33:06,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:33:06,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:33:06,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:33:06,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:33:06,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:33:06,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:33:06,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:33:06,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:33:06,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:33:06,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:33:06,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:33:06,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:33:06,907 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:33:06,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-29 05:33:06,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9148fcce/273d7ecb07374d8587a5d72b261bc50c/FLAG1dab94dba [2020-10-29 05:33:08,282 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:33:08,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-29 05:33:08,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9148fcce/273d7ecb07374d8587a5d72b261bc50c/FLAG1dab94dba [2020-10-29 05:33:08,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9148fcce/273d7ecb07374d8587a5d72b261bc50c [2020-10-29 05:33:08,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:33:08,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:33:08,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:33:08,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:33:08,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:33:08,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:08" (1/1) ... [2020-10-29 05:33:08,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485c99ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:08, skipping insertion in model container [2020-10-29 05:33:08,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:08" (1/1) ... [2020-10-29 05:33:08,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:33:08,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:33:11,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:33:11,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:33:12,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:33:12,526 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:33:12,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12 WrapperNode [2020-10-29 05:33:12,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:33:12,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:33:12,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:33:12,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:33:12,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:12,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:12,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:12,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:12,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:13,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:13,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (1/1) ... [2020-10-29 05:33:13,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:33:13,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:33:13,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:33:13,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:33:13,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (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 05:33:13,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:33:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:33:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:33:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:33:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:33:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:33:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:33:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:33:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:33:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:33:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:33:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:33:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:33:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:33:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:33:23,157 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:33:23,158 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:33:23,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:23 BoogieIcfgContainer [2020-10-29 05:33:23,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:33:23,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:33:23,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:33:23,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:33:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:33:08" (1/3) ... [2020-10-29 05:33:23,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5bf8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:23, skipping insertion in model container [2020-10-29 05:33:23,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:12" (2/3) ... [2020-10-29 05:33:23,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5bf8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:23, skipping insertion in model container [2020-10-29 05:33:23,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:23" (3/3) ... [2020-10-29 05:33:23,171 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label55.c [2020-10-29 05:33:23,182 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:33:23,189 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:33:23,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:33:23,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:33:23,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:33:23,238 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:33:23,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:33:23,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:33:23,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:33:23,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:33:23,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:33:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:33:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2020-10-29 05:33:23,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:23,436 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] [2020-10-29 05:33:23,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:23,444 INFO L82 PathProgramCache]: Analyzing trace with hash -504284697, now seen corresponding path program 1 times [2020-10-29 05:33:23,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:23,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781059069] [2020-10-29 05:33:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:29,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1680 [2020-10-29 05:33:29,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-29 05:33:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:33:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:33:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1671 [2020-10-29 05:33:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:33:31,984 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:33:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:32,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:32,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:33:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:32,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:33:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:33:34,379 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 05:33:34,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781059069] [2020-10-29 05:33:34,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:33:34,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:33:34,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965312765] [2020-10-29 05:33:34,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:33:34,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:34,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:33:34,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:33:34,414 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:33:34,615 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:33:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:33:57,086 INFO L93 Difference]: Finished difference Result 6314 states and 11856 transitions. [2020-10-29 05:33:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:33:57,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1656 [2020-10-29 05:33:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:33:57,147 INFO L225 Difference]: With dead ends: 6314 [2020-10-29 05:33:57,147 INFO L226 Difference]: Without dead ends: 4024 [2020-10-29 05:33:57,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:33:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-29 05:33:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4009. [2020-10-29 05:33:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-29 05:33:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6272 transitions. [2020-10-29 05:33:57,414 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6272 transitions. Word has length 1656 [2020-10-29 05:33:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:33:57,420 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6272 transitions. [2020-10-29 05:33:57,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:33:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6272 transitions. [2020-10-29 05:33:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2020-10-29 05:33:57,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:57,517 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:33:57,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:33:57,518 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1869894685, now seen corresponding path program 1 times [2020-10-29 05:33:57,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:57,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771456050] [2020-10-29 05:33:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:02,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:02,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1691 [2020-10-29 05:34:02,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-29 05:34:02,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:02,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:02,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:34:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:34:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1668 [2020-10-29 05:34:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:34:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:04,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:04,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:04,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:34:04,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:04,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:04,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:34:04,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:34:04,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:04,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:34:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:34:07,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771456050] [2020-10-29 05:34:07,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:07,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:34:07,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839463690] [2020-10-29 05:34:07,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:34:07,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:07,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:34:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:34:07,361 INFO L87 Difference]: Start difference. First operand 4009 states and 6272 transitions. Second operand 5 states. [2020-10-29 05:34:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:32,345 INFO L93 Difference]: Finished difference Result 11657 states and 18426 transitions. [2020-10-29 05:34:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:34:32,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1665 [2020-10-29 05:34:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:32,393 INFO L225 Difference]: With dead ends: 11657 [2020-10-29 05:34:32,393 INFO L226 Difference]: Without dead ends: 7654 [2020-10-29 05:34:32,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:34:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7654 states. [2020-10-29 05:34:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7654 to 7581. [2020-10-29 05:34:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2020-10-29 05:34:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 10699 transitions. [2020-10-29 05:34:32,637 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 10699 transitions. Word has length 1665 [2020-10-29 05:34:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:32,641 INFO L481 AbstractCegarLoop]: Abstraction has 7581 states and 10699 transitions. [2020-10-29 05:34:32,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:34:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 10699 transitions. [2020-10-29 05:34:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-29 05:34:32,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:32,792 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:34:32,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:34:32,792 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:32,794 INFO L82 PathProgramCache]: Analyzing trace with hash -650802201, now seen corresponding path program 1 times [2020-10-29 05:34:32,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:32,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972479634] [2020-10-29 05:34:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:37,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:37,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1692 [2020-10-29 05:34:37,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:37,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1668 [2020-10-29 05:34:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:38,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:34:38,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:39,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:34:39,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:34:39,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:39,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 05:34:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:34:41,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972479634] [2020-10-29 05:34:41,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:41,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:34:41,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587509287] [2020-10-29 05:34:41,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:34:41,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:34:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:34:41,189 INFO L87 Difference]: Start difference. First operand 7581 states and 10699 transitions. Second operand 5 states. [2020-10-29 05:35:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:35:07,478 INFO L93 Difference]: Finished difference Result 18779 states and 27355 transitions. [2020-10-29 05:35:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:35:07,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1666 [2020-10-29 05:35:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:35:07,544 INFO L225 Difference]: With dead ends: 18779 [2020-10-29 05:35:07,544 INFO L226 Difference]: Without dead ends: 11204 [2020-10-29 05:35:07,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:35:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2020-10-29 05:35:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 11120. [2020-10-29 05:35:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11120 states. [2020-10-29 05:35:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11120 states to 11120 states and 15219 transitions. [2020-10-29 05:35:07,867 INFO L78 Accepts]: Start accepts. Automaton has 11120 states and 15219 transitions. Word has length 1666 [2020-10-29 05:35:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:35:07,871 INFO L481 AbstractCegarLoop]: Abstraction has 11120 states and 15219 transitions. [2020-10-29 05:35:07,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:35:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11120 states and 15219 transitions. [2020-10-29 05:35:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-29 05:35:07,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:35:07,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:07,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:35:07,936 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:35:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:35:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 161999074, now seen corresponding path program 1 times [2020-10-29 05:35:07,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:35:07,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311268461] [2020-10-29 05:35:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:35:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:13,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:13,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 05:35:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 05:35:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-29 05:35:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:16,124 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 05:35:16,569 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-29 05:35:16,938 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-10-29 05:35:17,312 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2020-10-29 05:35:17,552 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2020-10-29 05:35:17,763 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-29 05:35:17,898 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-29 05:35:18,037 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-29 05:35:18,171 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-29 05:35:18,313 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-29 05:35:18,530 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-29 05:35:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:35:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:19,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:19,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:35:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:35:19,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:19,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:35:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:35:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:35:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:19,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:35:19,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:35:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 05:35:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:35:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:35:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 05:35:40,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311268461] [2020-10-29 05:35:40,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:35:40,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 05:35:40,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352188890] [2020-10-29 05:35:40,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 05:35:40,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:35:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 05:35:40,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-29 05:35:40,887 INFO L87 Difference]: Start difference. First operand 11120 states and 15219 transitions. Second operand 24 states. [2020-10-29 05:35:41,834 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 05:35:42,393 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:35:42,730 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:35:52,083 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2020-10-29 05:35:54,120 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 125 [2020-10-29 05:35:57,736 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 103 [2020-10-29 05:35:58,248 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-10-29 05:36:12,824 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-10-29 05:36:13,326 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-10-29 05:36:28,439 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-10-29 05:36:28,970 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-10-29 05:36:34,760 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-10-29 05:36:44,826 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2020-10-29 05:36:45,300 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2020-10-29 05:36:51,345 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102