/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:19:25,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:19:25,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:19:25,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:19:25,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:19:25,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:19:25,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:19:25,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:19:25,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:19:25,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:19:25,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:19:25,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:19:25,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:19:25,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:19:25,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:19:25,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:19:25,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:19:25,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:19:25,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:19:25,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:19:25,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:19:25,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:19:25,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:19:25,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:19:25,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:19:25,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:19:25,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:19:25,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:19:25,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:19:25,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:19:25,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:19:25,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:19:25,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:19:25,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:19:25,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:19:25,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:19:25,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:19:25,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:19:25,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:19:25,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:19:25,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:19:25,315 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 05:19:25,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:19:25,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:19:25,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:19:25,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:19:25,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:19:25,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:19:25,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:19:25,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:19:25,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:19:25,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:19:25,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:19:25,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:19:25,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:19:25,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:19:25,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:19:25,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:19:25,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:19:25,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:19:25,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:19:25,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:19:25,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:19:25,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:19:25,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:19:25,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:19:25,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:19:25,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:19:25,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:19:25,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:19:25,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:19:25,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:19:25,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:19:25,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:19:25,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:19:25,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:19:25,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:19:25,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label07.c [2020-10-29 05:19:25,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/401b513cc/4d549bc9416f47a3affd30a73daca500/FLAG754153c57 [2020-10-29 05:19:27,174 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:19:27,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label07.c [2020-10-29 05:19:27,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/401b513cc/4d549bc9416f47a3affd30a73daca500/FLAG754153c57 [2020-10-29 05:19:27,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/401b513cc/4d549bc9416f47a3affd30a73daca500 [2020-10-29 05:19:27,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:19:27,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:19:27,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:19:27,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:19:27,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:19:27,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:27" (1/1) ... [2020-10-29 05:19:27,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e89483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:27, skipping insertion in model container [2020-10-29 05:19:27,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:27" (1/1) ... [2020-10-29 05:19:27,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:19:27,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:19:30,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:19:30,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:19:31,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:19:31,454 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:19:31,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31 WrapperNode [2020-10-29 05:19:31,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:19:31,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:19:31,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:19:31,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:19:31,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (1/1) ... [2020-10-29 05:19:31,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:19:31,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:19:31,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:19:31,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:19:31,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (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 05:19:32,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:19:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:19:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:19:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:19:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:19:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:19:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:19:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:19:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:19:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:19:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:19:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:19:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:19:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:19:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:19:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:19:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:19:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:19:41,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:19:41,888 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:19:41,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:41 BoogieIcfgContainer [2020-10-29 05:19:41,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:19:41,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:19:41,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:19:41,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:19:41,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:19:27" (1/3) ... [2020-10-29 05:19:41,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e8d50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:41, skipping insertion in model container [2020-10-29 05:19:41,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:31" (2/3) ... [2020-10-29 05:19:41,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e8d50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:41, skipping insertion in model container [2020-10-29 05:19:41,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:41" (3/3) ... [2020-10-29 05:19:41,902 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label07.c [2020-10-29 05:19:41,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:19:41,921 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:19:41,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:19:41,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:19:41,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:19:41,973 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:19:41,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:19:41,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:19:41,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:19:41,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:19:41,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:19:42,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:19:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2020-10-29 05:19:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:42,261 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, 1, 1, 1, 1, 1, 1] [2020-10-29 05:19:42,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:42,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1037545073, now seen corresponding path program 1 times [2020-10-29 05:19:42,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:42,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410685810] [2020-10-29 05:19:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1706 [2020-10-29 05:19:48,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 05:19:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:48,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:19:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:19:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1697 [2020-10-29 05:19:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:19:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:19:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:50,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:19:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:19:53,799 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 05:19:53,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410685810] [2020-10-29 05:19:53,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:19:53,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:19:53,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157496031] [2020-10-29 05:19:53,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:19:53,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:19:53,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:19:53,830 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:20:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:29,469 INFO L93 Difference]: Finished difference Result 8129 states and 15417 transitions. [2020-10-29 05:20:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:20:29,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1682 [2020-10-29 05:20:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:29,537 INFO L225 Difference]: With dead ends: 8129 [2020-10-29 05:20:29,538 INFO L226 Difference]: Without dead ends: 5835 [2020-10-29 05:20:29,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:20:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-29 05:20:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5802. [2020-10-29 05:20:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-29 05:20:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9375 transitions. [2020-10-29 05:20:29,828 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9375 transitions. Word has length 1682 [2020-10-29 05:20:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:29,833 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9375 transitions. [2020-10-29 05:20:29,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:20:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9375 transitions. [2020-10-29 05:20:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2020-10-29 05:20:30,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:30,052 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, 1, 1, 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 05:20:30,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:20:30,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:30,054 INFO L82 PathProgramCache]: Analyzing trace with hash 947126411, now seen corresponding path program 1 times [2020-10-29 05:20:30,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:30,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098274145] [2020-10-29 05:20:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:35,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:35,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1717 [2020-10-29 05:20:35,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:20:35,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 05:20:35,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:35,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:20:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:20:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1694 [2020-10-29 05:20:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:20:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:20:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:37,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:37,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:20:37,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:20:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:20:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:38,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:20:38,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:20:38,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:38,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:20:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:20:40,424 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 05:20:40,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098274145] [2020-10-29 05:20:40,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:40,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:20:40,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571839629] [2020-10-29 05:20:40,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:20:40,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:40,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:20:40,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:20:40,436 INFO L87 Difference]: Start difference. First operand 5802 states and 9375 transitions. Second operand 5 states. [2020-10-29 05:21:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:21:08,824 INFO L93 Difference]: Finished difference Result 16918 states and 27742 transitions. [2020-10-29 05:21:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:21:08,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1691 [2020-10-29 05:21:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:21:08,896 INFO L225 Difference]: With dead ends: 16918 [2020-10-29 05:21:08,897 INFO L226 Difference]: Without dead ends: 11122 [2020-10-29 05:21:08,914 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 05:21:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11122 states. [2020-10-29 05:21:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11122 to 11076. [2020-10-29 05:21:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11076 states. [2020-10-29 05:21:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 15664 transitions. [2020-10-29 05:21:09,284 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 15664 transitions. Word has length 1691 [2020-10-29 05:21:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:21:09,288 INFO L481 AbstractCegarLoop]: Abstraction has 11076 states and 15664 transitions. [2020-10-29 05:21:09,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:21:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 15664 transitions. [2020-10-29 05:21:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2020-10-29 05:21:09,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:09,425 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:21:09,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:21:09,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1244047231, now seen corresponding path program 1 times [2020-10-29 05:21:09,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:09,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557373139] [2020-10-29 05:21:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:14,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 05:21:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 05:21:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1692 [2020-10-29 05:21:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:16,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:16,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:16,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:21:16,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:16,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:21:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:21:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:21:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:16,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:21:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:21:33,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557373139] [2020-10-29 05:21:33,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:21:33,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:21:33,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095404834] [2020-10-29 05:21:33,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:21:33,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:33,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:21:33,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:21:33,248 INFO L87 Difference]: Start difference. First operand 11076 states and 15664 transitions. Second operand 6 states. [2020-10-29 05:21:33,623 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 05:22:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:10,068 INFO L93 Difference]: Finished difference Result 34317 states and 50610 transitions. [2020-10-29 05:22:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:22:10,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1697 [2020-10-29 05:22:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:10,153 INFO L225 Difference]: With dead ends: 34317 [2020-10-29 05:22:10,153 INFO L226 Difference]: Without dead ends: 21572 [2020-10-29 05:22:10,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:22:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21572 states. [2020-10-29 05:22:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21572 to 21568. [2020-10-29 05:22:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21568 states. [2020-10-29 05:22:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21568 states to 21568 states and 28632 transitions. [2020-10-29 05:22:10,792 INFO L78 Accepts]: Start accepts. Automaton has 21568 states and 28632 transitions. Word has length 1697 [2020-10-29 05:22:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:10,792 INFO L481 AbstractCegarLoop]: Abstraction has 21568 states and 28632 transitions. [2020-10-29 05:22:10,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:22:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 21568 states and 28632 transitions. [2020-10-29 05:22:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-29 05:22:10,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:10,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2020-10-29 05:22:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:22:10,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 557659600, now seen corresponding path program 1 times [2020-10-29 05:22:10,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:10,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907129773] [2020-10-29 05:22:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:22:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:22:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1694 [2020-10-29 05:22:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:17,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:17,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 05:22:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:22:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:22:19,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907129773] [2020-10-29 05:22:19,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:19,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:22:19,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155403327] [2020-10-29 05:22:19,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:22:19,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:19,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:22:19,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:22:19,843 INFO L87 Difference]: Start difference. First operand 21568 states and 28632 transitions. Second operand 5 states. [2020-10-29 05:22:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:48,761 INFO L93 Difference]: Finished difference Result 64245 states and 87625 transitions. [2020-10-29 05:22:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:22:48,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1704 [2020-10-29 05:22:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:48,944 INFO L225 Difference]: With dead ends: 64245 [2020-10-29 05:22:48,944 INFO L226 Difference]: Without dead ends: 42683 [2020-10-29 05:22:49,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:22:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42683 states. [2020-10-29 05:22:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42683 to 42618. [2020-10-29 05:22:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42618 states. [2020-10-29 05:22:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42618 states to 42618 states and 54313 transitions. [2020-10-29 05:22:50,370 INFO L78 Accepts]: Start accepts. Automaton has 42618 states and 54313 transitions. Word has length 1704 [2020-10-29 05:22:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:50,373 INFO L481 AbstractCegarLoop]: Abstraction has 42618 states and 54313 transitions. [2020-10-29 05:22:50,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:22:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 42618 states and 54313 transitions. [2020-10-29 05:22:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1744 [2020-10-29 05:22:50,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:50,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-29 05:22:50,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:22:50,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:50,515 INFO L82 PathProgramCache]: Analyzing trace with hash -373863043, now seen corresponding path program 1 times [2020-10-29 05:22:50,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:50,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52578650] [2020-10-29 05:22:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:55,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1771 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:22:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:56,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:56,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:56,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:22:56,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:56,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 05:22:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 05:22:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:22:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:22:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:22:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:56,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 05:22:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:56,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:56,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:22:56,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:22:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:22:57,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52578650] [2020-10-29 05:22:57,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:57,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:22:57,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835781099] [2020-10-29 05:22:57,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:22:57,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:22:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:22:57,797 INFO L87 Difference]: Start difference. First operand 42618 states and 54313 transitions. Second operand 7 states.