/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem19_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:16:04,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:16:04,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:16:04,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:16:04,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:16:04,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:16:04,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:16:04,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:16:04,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:16:04,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:16:04,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:16:04,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:16:04,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:16:04,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:16:04,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:16:04,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:16:04,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:16:04,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:16:04,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:16:04,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:16:04,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:16:04,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:16:04,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:16:04,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:16:04,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:16:04,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:16:04,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:16:04,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:16:04,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:16:04,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:16:04,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:16:04,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:16:04,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:16:04,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:16:04,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:16:04,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:16:04,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:16:04,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:16:04,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:16:04,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:16:04,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:16:04,348 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 [2020-10-28 14:16:04,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:16:04,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:16:04,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:16:04,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:16:04,383 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:16:04,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:16:04,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:16:04,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:16:04,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:16:04,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:16:04,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:16:04,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:16:04,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:16:04,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:16:04,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:16:04,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:16:04,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:16:04,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:16:04,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:16:04,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:16:04,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:16:04,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:16:04,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:16:04,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:16:04,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:16:04,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:16:04,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:16:04,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:16:04,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:16:04,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:16:04,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:16:04,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:16:04,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:16:04,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:16:04,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:16:04,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52.c [2020-10-28 14:16:05,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e53d9791/334154e762a2403a968a3307ec2cc92a/FLAG08e7ad078 [2020-10-28 14:16:06,385 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:16:06,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label52.c [2020-10-28 14:16:06,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e53d9791/334154e762a2403a968a3307ec2cc92a/FLAG08e7ad078 [2020-10-28 14:16:06,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e53d9791/334154e762a2403a968a3307ec2cc92a [2020-10-28 14:16:06,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:16:06,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:16:06,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:16:06,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:16:06,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:16:06,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:16:06" (1/1) ... [2020-10-28 14:16:06,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b560c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:06, skipping insertion in model container [2020-10-28 14:16:06,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:16:06" (1/1) ... [2020-10-28 14:16:06,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:16:06,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:16:09,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:16:09,401 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:16:10,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:16:10,642 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:16:10,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10 WrapperNode [2020-10-28 14:16:10,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:16:10,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:16:10,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:16:10,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:16:10,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:10,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:10,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:10,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:11,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:11,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:11,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (1/1) ... [2020-10-28 14:16:11,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:16:11,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:16:11,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:16:11,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:16:11,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (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 [2020-10-28 14:16:11,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:16:11,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:16:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:16:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:16:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:16:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:16:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:16:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:16:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:16:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:16:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:16:30,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:16:30,167 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:16:30,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:16:30 BoogieIcfgContainer [2020-10-28 14:16:30,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:16:30,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:16:30,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:16:30,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:16:30,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:16:06" (1/3) ... [2020-10-28 14:16:30,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42363e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:16:30, skipping insertion in model container [2020-10-28 14:16:30,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:16:10" (2/3) ... [2020-10-28 14:16:30,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42363e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:16:30, skipping insertion in model container [2020-10-28 14:16:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:16:30" (3/3) ... [2020-10-28 14:16:30,184 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label52.c [2020-10-28 14:16:30,200 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:16:30,209 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:16:30,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:16:30,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:16:30,274 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:16:30,274 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:16:30,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:16:30,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:16:30,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:16:30,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:16:30,275 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:16:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:16:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 14:16:30,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:16:30,345 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] [2020-10-28 14:16:30,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:16:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:16:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash 875298829, now seen corresponding path program 1 times [2020-10-28 14:16:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:16:30,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272604078] [2020-10-28 14:16:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:16:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:16:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-28 14:16:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:31,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:16:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:16:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 14:16:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:16:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:16:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:31,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:16:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:16:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:31,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:16:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:16:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:16:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:16:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:16:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272604078] [2020-10-28 14:16:31,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:16:31,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:16:31,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419944263] [2020-10-28 14:16:31,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:16:31,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:16:31,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:16:31,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:16:31,699 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:17:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:17:03,073 INFO L93 Difference]: Finished difference Result 5100 states and 9572 transitions. [2020-10-28 14:17:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:17:03,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 14:17:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:17:03,138 INFO L225 Difference]: With dead ends: 5100 [2020-10-28 14:17:03,139 INFO L226 Difference]: Without dead ends: 3255 [2020-10-28 14:17:03,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:17:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-28 14:17:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209. [2020-10-28 14:17:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2020-10-28 14:17:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions. [2020-10-28 14:17:03,471 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 62 [2020-10-28 14:17:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:17:03,476 INFO L481 AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions. [2020-10-28 14:17:03,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:17:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions. [2020-10-28 14:17:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 14:17:03,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:03,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:17:03,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:17:03,498 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash -337237180, now seen corresponding path program 1 times [2020-10-28 14:17:03,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:03,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335305170] [2020-10-28 14:17:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:05,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:05,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 14:17:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:17:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-28 14:17:05,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:05,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:17:05,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:17:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:06,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:06,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:17:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:06,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:17:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:17:06,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 14:17:06,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:06,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:17:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:17:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:17:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:06,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335305170] [2020-10-28 14:17:06,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:06,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:17:06,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107691385] [2020-10-28 14:17:06,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:17:06,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:17:06,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:17:06,503 INFO L87 Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 7 states. [2020-10-28 14:17:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:17:50,981 INFO L93 Difference]: Finished difference Result 9454 states and 15385 transitions. [2020-10-28 14:17:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:17:50,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 14:17:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:17:51,022 INFO L225 Difference]: With dead ends: 9454 [2020-10-28 14:17:51,023 INFO L226 Difference]: Without dead ends: 6251 [2020-10-28 14:17:51,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:17:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2020-10-28 14:17:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6159. [2020-10-28 14:17:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6159 states. [2020-10-28 14:17:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 8994 transitions. [2020-10-28 14:17:51,251 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 8994 transitions. Word has length 137 [2020-10-28 14:17:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:17:51,255 INFO L481 AbstractCegarLoop]: Abstraction has 6159 states and 8994 transitions. [2020-10-28 14:17:51,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:17:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 8994 transitions. [2020-10-28 14:17:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 14:17:51,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:51,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:17:51,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:17:51,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:51,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1555309058, now seen corresponding path program 1 times [2020-10-28 14:17:51,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:51,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078980407] [2020-10-28 14:17:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:51,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 14:17:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:17:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3557 [2020-10-28 14:17:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:54,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:17:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:55,086 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:17:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:55,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:55,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:17:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:55,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:17:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:17:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 14:17:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:55,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:17:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:17:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 14:17:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078980407] [2020-10-28 14:17:55,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:55,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:17:55,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559738670] [2020-10-28 14:17:55,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:17:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:17:55,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:17:55,578 INFO L87 Difference]: Start difference. First operand 6159 states and 8994 transitions. Second operand 7 states. [2020-10-28 14:18:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:18:52,135 INFO L93 Difference]: Finished difference Result 18793 states and 27962 transitions. [2020-10-28 14:18:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:18:52,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-28 14:18:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:18:52,208 INFO L225 Difference]: With dead ends: 18793 [2020-10-28 14:18:52,209 INFO L226 Difference]: Without dead ends: 12640 [2020-10-28 14:18:52,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:18:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12640 states. [2020-10-28 14:18:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12640 to 12372. [2020-10-28 14:18:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12372 states. [2020-10-28 14:18:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 16448 transitions. [2020-10-28 14:18:52,601 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 16448 transitions. Word has length 163 [2020-10-28 14:18:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:18:52,604 INFO L481 AbstractCegarLoop]: Abstraction has 12372 states and 16448 transitions. [2020-10-28 14:18:52,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:18:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 16448 transitions. [2020-10-28 14:18:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 14:18:52,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:18:52,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:18:52,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:18:52,612 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:18:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:18:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2134654986, now seen corresponding path program 1 times [2020-10-28 14:18:52,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:18:52,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599390013] [2020-10-28 14:18:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:18:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:54,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 14:18:54,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:18:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-28 14:18:54,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:54,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:18:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-28 14:18:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:18:54,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:18:54,473 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:18:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:18:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:54,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:54,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:18:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:18:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:54,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:18:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:18:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:18:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:18:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:18:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:54,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:54,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 14:18:54,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 14:18:54,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:54,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:18:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 14:18:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:18:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:18:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:18:54,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599390013] [2020-10-28 14:18:54,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:18:54,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:18:54,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271590471] [2020-10-28 14:18:54,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:18:54,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:18:54,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:18:54,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:18:54,778 INFO L87 Difference]: Start difference. First operand 12372 states and 16448 transitions. Second operand 5 states. [2020-10-28 14:18:54,938 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:19:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:19:47,376 INFO L93 Difference]: Finished difference Result 36341 states and 49883 transitions. [2020-10-28 14:19:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:19:47,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-28 14:19:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:19:47,490 INFO L225 Difference]: With dead ends: 36341 [2020-10-28 14:19:47,490 INFO L226 Difference]: Without dead ends: 23975 [2020-10-28 14:19:47,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:19:47,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23975 states. [2020-10-28 14:19:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23975 to 23930. [2020-10-28 14:19:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23930 states. [2020-10-28 14:19:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23930 states to 23930 states and 32131 transitions. [2020-10-28 14:19:48,291 INFO L78 Accepts]: Start accepts. Automaton has 23930 states and 32131 transitions. Word has length 185 [2020-10-28 14:19:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:19:48,293 INFO L481 AbstractCegarLoop]: Abstraction has 23930 states and 32131 transitions. [2020-10-28 14:19:48,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:19:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 23930 states and 32131 transitions. [2020-10-28 14:19:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 14:19:48,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:48,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:19:48,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:19:48,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:48,301 INFO L82 PathProgramCache]: Analyzing trace with hash -623880661, now seen corresponding path program 1 times [2020-10-28 14:19:48,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:48,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910986650] [2020-10-28 14:19:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:50,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:50,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 14:19:50,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:19:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-28 14:19:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:50,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:19:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:19:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 14:19:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:50,733 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:19:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:50,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:50,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:50,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:19:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:19:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:51,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:51,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 14:19:51,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:51,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 14:19:51,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:51,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:19:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:19:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 14:19:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:19:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910986650] [2020-10-28 14:19:51,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:51,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:19:51,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38947573] [2020-10-28 14:19:51,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:19:51,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:51,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:19:51,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:19:51,373 INFO L87 Difference]: Start difference. First operand 23930 states and 32131 transitions. Second operand 7 states. [2020-10-28 14:19:51,590 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:19:58,475 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66