/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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:10:43,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:10:43,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:10:43,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:10:43,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:10:43,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:10:43,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:10:43,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:10:43,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:10:43,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:10:43,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:10:43,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:10:43,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:10:43,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:10:43,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:10:43,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:10:43,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:10:43,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:10:43,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:10:43,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:10:43,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:10:43,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:10:43,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:10:43,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:10:43,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:10:43,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:10:43,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:10:43,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:10:43,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:10:43,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:10:43,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:10:43,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:10:43,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:10:43,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:10:43,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:10:43,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:10:43,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:10:43,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:10:43,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:10:43,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:10:43,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:10:43,219 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 14:10:43,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:10:43,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:10:43,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:10:43,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:10:43,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:10:43,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:10:43,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:10:43,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:10:43,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:10:43,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:10:43,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:10:43,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:10:43,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:10:43,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:10:43,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:10:43,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:10:43,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:10:43,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:10:43,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:10:43,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:10:43,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:10:43,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:10:43,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:10:43,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:10:43,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:10:43,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:10:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:10:43,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:10:43,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:10:43,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:10:43,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:10:43,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:10:43,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:10:43,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:10:43,863 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:10:43,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2020-10-28 14:10:43,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73e7e038/fcbe786f0782417e9891323268d176a2/FLAGac8fd5918 [2020-10-28 14:10:45,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:10:45,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2020-10-28 14:10:45,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73e7e038/fcbe786f0782417e9891323268d176a2/FLAGac8fd5918 [2020-10-28 14:10:45,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73e7e038/fcbe786f0782417e9891323268d176a2 [2020-10-28 14:10:45,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:10:45,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:10:45,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:10:45,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:10:45,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:10:45,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:10:45" (1/1) ... [2020-10-28 14:10:45,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179c13ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:45, skipping insertion in model container [2020-10-28 14:10:45,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:10:45" (1/1) ... [2020-10-28 14:10:45,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:10:45,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:10:48,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:10:48,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:10:49,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:10:49,671 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:10:49,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49 WrapperNode [2020-10-28 14:10:49,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:10:49,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:10:49,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:10:49,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:10:49,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:49,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:49,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:49,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:50,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:50,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:50,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (1/1) ... [2020-10-28 14:10:50,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:10:50,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:10:50,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:10:50,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:10:50,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (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 14:10:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:10:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:10:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:10:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:10:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:10:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:10:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:10:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:10:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:10:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:10:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:10:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:10:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:10:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:10:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:10:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:10:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:10:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:10:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:11:08,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:11:08,404 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:11:08,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:11:08 BoogieIcfgContainer [2020-10-28 14:11:08,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:11:08,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:11:08,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:11:08,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:11:08,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:10:45" (1/3) ... [2020-10-28 14:11:08,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586964a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:11:08, skipping insertion in model container [2020-10-28 14:11:08,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:49" (2/3) ... [2020-10-28 14:11:08,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586964a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:11:08, skipping insertion in model container [2020-10-28 14:11:08,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:11:08" (3/3) ... [2020-10-28 14:11:08,424 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label32.c [2020-10-28 14:11:08,441 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:11:08,451 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:11:08,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:11:08,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:11:08,522 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:11:08,523 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:11:08,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:11:08,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:11:08,524 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:11:08,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:11:08,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:11:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:11:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:11:08,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:11:08,613 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] [2020-10-28 14:11:08,613 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:11:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:11:08,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1202181949, now seen corresponding path program 1 times [2020-10-28 14:11:08,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:11:08,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087277248] [2020-10-28 14:11:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:11:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:09,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:11:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-28 14:11:09,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:09,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:11:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:11:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:11:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:11:09,853 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:11:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:11:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:09,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:09,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:11:09,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:11:09,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:09,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:11:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:11:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:11:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:11:09,939 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 14:11:09,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087277248] [2020-10-28 14:11:09,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:11:09,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:11:09,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982077786] [2020-10-28 14:11:09,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:11:09,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:11:09,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:11:09,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:11:09,973 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:11:10,183 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:11:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:11:44,034 INFO L93 Difference]: Finished difference Result 5116 states and 9607 transitions. [2020-10-28 14:11:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:11:44,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:11:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:11:44,112 INFO L225 Difference]: With dead ends: 5116 [2020-10-28 14:11:44,113 INFO L226 Difference]: Without dead ends: 3271 [2020-10-28 14:11:44,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:11:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-28 14:11:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3200. [2020-10-28 14:11:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-10-28 14:11:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5484 transitions. [2020-10-28 14:11:44,433 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5484 transitions. Word has length 26 [2020-10-28 14:11:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:11:44,434 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5484 transitions. [2020-10-28 14:11:44,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:11:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5484 transitions. [2020-10-28 14:11:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 14:11:44,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:11:44,449 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:11:44,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:11:44,450 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:11:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:11:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1684412835, now seen corresponding path program 1 times [2020-10-28 14:11:44,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:11:44,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287639052] [2020-10-28 14:11:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:11:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:46,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 14:11:46,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:11:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-28 14:11:46,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:46,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:11:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:11:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 14:11:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:11:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:11:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:46,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:46,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:11:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:11:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:46,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:11:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:11:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:11:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:11:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:11:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:11:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 14:11:46,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:46,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:11:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:11:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 14:11:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:11:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:11:47,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287639052] [2020-10-28 14:11:47,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:11:47,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:11:47,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487115149] [2020-10-28 14:11:47,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:11:47,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:11:47,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:11:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:11:47,092 INFO L87 Difference]: Start difference. First operand 3200 states and 5484 transitions. Second operand 7 states. [2020-10-28 14:12:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:12:35,464 INFO L93 Difference]: Finished difference Result 9487 states and 16356 transitions. [2020-10-28 14:12:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:12:35,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-28 14:12:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:12:35,518 INFO L225 Difference]: With dead ends: 9487 [2020-10-28 14:12:35,519 INFO L226 Difference]: Without dead ends: 6293 [2020-10-28 14:12:35,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:12:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2020-10-28 14:12:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 6190. [2020-10-28 14:12:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6190 states. [2020-10-28 14:12:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 10269 transitions. [2020-10-28 14:12:35,806 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 10269 transitions. Word has length 98 [2020-10-28 14:12:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:12:35,808 INFO L481 AbstractCegarLoop]: Abstraction has 6190 states and 10269 transitions. [2020-10-28 14:12:35,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:12:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 10269 transitions. [2020-10-28 14:12:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 14:12:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:12:35,821 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:12:35,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:12:35,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:12:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:12:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1952859084, now seen corresponding path program 1 times [2020-10-28 14:12:35,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:12:35,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818749362] [2020-10-28 14:12:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:12:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 14:12:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:12:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-28 14:12:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:37,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:12:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:12:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:12:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:12:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:12:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:12:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:12:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:12:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:37,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:12:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:12:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:12:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:12:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:12:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:12:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:12:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 14:12:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:12:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:12:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:12:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:12:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:12:37,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818749362] [2020-10-28 14:12:37,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:12:37,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:12:37,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10879901] [2020-10-28 14:12:37,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:12:37,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:12:37,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:12:37,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:12:37,688 INFO L87 Difference]: Start difference. First operand 6190 states and 10269 transitions. Second operand 7 states. [2020-10-28 14:13:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:13:34,214 INFO L93 Difference]: Finished difference Result 18436 states and 30883 transitions. [2020-10-28 14:13:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:13:34,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-28 14:13:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:13:34,284 INFO L225 Difference]: With dead ends: 18436 [2020-10-28 14:13:34,285 INFO L226 Difference]: Without dead ends: 12252 [2020-10-28 14:13:34,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:13:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12252 states. [2020-10-28 14:13:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12252 to 12009. [2020-10-28 14:13:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12009 states. [2020-10-28 14:13:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18030 transitions. [2020-10-28 14:13:34,638 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18030 transitions. Word has length 101 [2020-10-28 14:13:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:13:34,639 INFO L481 AbstractCegarLoop]: Abstraction has 12009 states and 18030 transitions. [2020-10-28 14:13:34,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:13:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18030 transitions. [2020-10-28 14:13:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 14:13:34,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:13:34,645 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:13:34,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:13:34,646 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:13:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:13:34,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1792611854, now seen corresponding path program 1 times [2020-10-28 14:13:34,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:13:34,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595834305] [2020-10-28 14:13:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:13:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:36,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:36,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 14:13:36,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:13:36,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-28 14:13:36,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:36,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:13:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:13:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:13:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:13:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:13:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:36,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:36,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:13:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:13:36,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:36,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:13:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:13:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:13:36,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:13:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:13:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:13:36,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 14:13:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:36,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:13:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:13:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 14:13:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:13:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:13:36,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595834305] [2020-10-28 14:13:36,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:13:36,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:13:36,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309808214] [2020-10-28 14:13:36,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:13:36,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:13:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:13:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:13:36,924 INFO L87 Difference]: Start difference. First operand 12009 states and 18030 transitions. Second operand 7 states.