/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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:30:36,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:30:36,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:30:36,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:30:36,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:30:36,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:30:36,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:30:36,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:30:36,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:30:36,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:30:36,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:30:36,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:30:36,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:30:36,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:30:36,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:30:36,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:30:36,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:30:36,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:30:36,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:30:36,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:30:36,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:30:36,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:30:36,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:30:36,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:30:36,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:30:36,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:30:36,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:30:36,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:30:36,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:30:36,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:30:36,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:30:36,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:30:36,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:30:36,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:30:36,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:30:36,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:30:36,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:30:36,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:30:36,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:30:36,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:30:36,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:30:36,486 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 05:30:36,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:30:36,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:30:36,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:30:36,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:30:36,550 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:30:36,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:30:36,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:30:36,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:30:36,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:30:36,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:30:36,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:30:36,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:30:36,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:30:36,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:30:36,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:30:36,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:30:36,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:30:36,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:30:36,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:30:36,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:30:36,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:30:36,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:30:36,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:30:36,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:30:36,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:30:36,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:30:36,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:30:36,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:30:36,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:30:36,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:30:37,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:30:37,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:30:37,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:30:37,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:30:37,074 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:30:37,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-29 05:30:37,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2e650c70/8e9ab73e4f0e4c68a563f5bf0ff2d7c6/FLAG23d9c98f6 [2020-10-29 05:30:38,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:30:38,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-29 05:30:38,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2e650c70/8e9ab73e4f0e4c68a563f5bf0ff2d7c6/FLAG23d9c98f6 [2020-10-29 05:30:38,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2e650c70/8e9ab73e4f0e4c68a563f5bf0ff2d7c6 [2020-10-29 05:30:38,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:30:38,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:30:38,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:38,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:30:38,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:30:38,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:38" (1/1) ... [2020-10-29 05:30:38,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74421ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:38, skipping insertion in model container [2020-10-29 05:30:38,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:38" (1/1) ... [2020-10-29 05:30:38,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:30:38,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:30:41,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:41,178 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:30:42,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:42,515 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:30:42,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42 WrapperNode [2020-10-29 05:30:42,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:42,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:30:42,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:30:42,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:30:42,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:42,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:42,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:42,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:42,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:43,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:43,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (1/1) ... [2020-10-29 05:30:43,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:30:43,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:30:43,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:30:43,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:30:43,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (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 05:30:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:30:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:30:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:30:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:30:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:30:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:30:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:30:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:30:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:30:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:30:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:30:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:30:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:30:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:30:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:30:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:30:54,057 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:30:54,058 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:30:54,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:54 BoogieIcfgContainer [2020-10-29 05:30:54,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:30:54,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:30:54,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:30:54,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:30:54,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:30:38" (1/3) ... [2020-10-29 05:30:54,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6340e27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:54, skipping insertion in model container [2020-10-29 05:30:54,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:42" (2/3) ... [2020-10-29 05:30:54,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6340e27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:54, skipping insertion in model container [2020-10-29 05:30:54,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:54" (3/3) ... [2020-10-29 05:30:54,075 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47.c [2020-10-29 05:30:54,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:30:54,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:30:54,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:30:54,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:30:54,156 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:30:54,156 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:30:54,156 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:30:54,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:30:54,157 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:30:54,157 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:30:54,157 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:30:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:30:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2020-10-29 05:30:54,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:30:54,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:30:54,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:30:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:30:54,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1210561719, now seen corresponding path program 1 times [2020-10-29 05:30:54,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:30:54,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406628384] [2020-10-29 05:30:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:30:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1700 [2020-10-29 05:31:00,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:31:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:00,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:31:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:31:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1691 [2020-10-29 05:31:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 05:31:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:02,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:02,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:02,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:31:02,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:02,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:31:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:06,586 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 05:31:06,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406628384] [2020-10-29 05:31:06,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:31:06,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:31:06,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454447533] [2020-10-29 05:31:06,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:31:06,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:06,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:31:06,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:31:06,629 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:31:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:31:42,428 INFO L93 Difference]: Finished difference Result 8130 states and 15411 transitions. [2020-10-29 05:31:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:31:42,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1676 [2020-10-29 05:31:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:31:42,510 INFO L225 Difference]: With dead ends: 8130 [2020-10-29 05:31:42,511 INFO L226 Difference]: Without dead ends: 5836 [2020-10-29 05:31:42,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:31:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2020-10-29 05:31:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5802. [2020-10-29 05:31:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-29 05:31:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9385 transitions. [2020-10-29 05:31:42,801 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9385 transitions. Word has length 1676 [2020-10-29 05:31:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:31:42,806 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9385 transitions. [2020-10-29 05:31:42,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:31:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9385 transitions. [2020-10-29 05:31:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-29 05:31:42,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:42,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:42,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:31:42,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611612, now seen corresponding path program 1 times [2020-10-29 05:31:42,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:42,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900303008] [2020-10-29 05:31:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-29 05:31:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:31:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 05:31:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:48,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:31:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:31:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:31:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:53,539 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:31:53,702 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:31:53,866 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:31:54,011 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 05:31:54,165 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 05:31:54,315 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 05:31:54,486 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 05:31:54,643 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 05:31:55,147 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-29 05:31:55,483 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-29 05:31:55,691 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-29 05:31:55,932 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-29 05:31:56,210 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-10-29 05:31:56,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:31:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:56,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:31:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:31:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:31:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:56,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:31:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:31:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:31:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:31:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:31:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:32:23,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900303008] [2020-10-29 05:32:23,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:32:23,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:32:23,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065396904] [2020-10-29 05:32:23,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:32:23,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:32:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:32:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:32:23,583 INFO L87 Difference]: Start difference. First operand 5802 states and 9385 transitions. Second operand 23 states. [2020-10-29 05:32:24,046 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:32:24,310 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:32:25,429 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:32:31,767 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:32:32,030 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:32:39,485 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:32:39,752 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:32:43,520 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:32:43,826 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:32:47,321 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:47,572 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:32:54,700 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:54,956 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:32:56,801 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 05:32:58,860 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2020-10-29 05:33:02,727 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:33:02,993 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:33:04,554 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-29 05:33:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:33:12,794 INFO L93 Difference]: Finished difference Result 12909 states and 21402 transitions. [2020-10-29 05:33:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:33:12,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1700 [2020-10-29 05:33:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:33:12,840 INFO L225 Difference]: With dead ends: 12909 [2020-10-29 05:33:12,840 INFO L226 Difference]: Without dead ends: 7113 [2020-10-29 05:33:12,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 05:33:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2020-10-29 05:33:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7106. [2020-10-29 05:33:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7106 states. [2020-10-29 05:33:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 10723 transitions. [2020-10-29 05:33:13,060 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 10723 transitions. Word has length 1700 [2020-10-29 05:33:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:33:13,063 INFO L481 AbstractCegarLoop]: Abstraction has 7106 states and 10723 transitions. [2020-10-29 05:33:13,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:33:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 10723 transitions. [2020-10-29 05:33:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-29 05:33:13,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:13,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:33:13,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:33:13,115 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 95577859, now seen corresponding path program 1 times [2020-10-29 05:33:13,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271241276] [2020-10-29 05:33:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:18,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-29 05:33:18,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:33:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-29 05:33:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:18,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 05:33:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:33:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-29 05:33:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:22,571 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-10-29 05:33:22,732 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2020-10-29 05:33:22,888 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 05:33:23,077 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-29 05:33:23,239 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 05:33:23,417 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 05:33:23,588 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 05:33:23,801 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-29 05:33:24,027 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-10-29 05:33:24,295 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 38 [2020-10-29 05:33:24,523 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2020-10-29 05:33:24,694 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-29 05:33:24,879 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-29 05:33:25,122 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 40 [2020-10-29 05:33:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:33:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:25,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:25,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:33:25,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:25,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:33:25,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:25,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:33:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:33:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:25,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:25,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:33:25,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:33:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:33:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:25,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 05:33:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:33:40,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271241276] [2020-10-29 05:33:40,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:33:40,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 05:33:40,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096424636] [2020-10-29 05:33:40,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:33:40,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:33:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:33:40,459 INFO L87 Difference]: Start difference. First operand 7106 states and 10723 transitions. Second operand 22 states. [2020-10-29 05:33:47,361 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 103