/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/Problem12_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:24:20,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:24:20,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:24:20,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:24:20,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:24:20,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:24:20,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:24:20,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:24:20,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:24:20,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:24:20,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:24:20,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:24:20,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:24:20,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:24:20,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:24:20,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:24:20,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:24:20,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:24:20,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:24:20,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:24:20,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:24:20,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:24:20,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:24:20,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:24:20,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:24:20,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:24:20,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:24:20,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:24:20,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:24:20,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:24:20,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:24:20,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:24:20,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:24:20,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:24:20,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:24:20,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:24:20,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:24:20,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:24:20,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:24:20,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:24:20,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:24:20,256 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 12:24:20,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:24:20,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:24:20,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:24:20,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:24:20,323 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:24:20,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:24:20,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:24:20,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:24:20,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:24:20,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:24:20,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:24:20,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:24:20,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:24:20,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:24:20,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:24:20,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:24:20,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:20,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:24:20,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:24:20,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:24:20,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:24:20,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:24:20,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:24:20,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:24:20,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:24:20,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:24:20,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:24:20,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:24:20,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:24:20,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:24:20,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-28 12:24:20,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f682fb/7af8b84d1a53445bb32dea9e400c89bf/FLAG1195cf1db [2020-10-28 12:24:22,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:24:22,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-28 12:24:22,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f682fb/7af8b84d1a53445bb32dea9e400c89bf/FLAG1195cf1db [2020-10-28 12:24:22,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f682fb/7af8b84d1a53445bb32dea9e400c89bf [2020-10-28 12:24:22,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:24:22,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:24:22,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:22,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:24:22,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:24:22,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:22" (1/1) ... [2020-10-28 12:24:22,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc40e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:22, skipping insertion in model container [2020-10-28 12:24:22,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:22" (1/1) ... [2020-10-28 12:24:22,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:24:22,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:24:24,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:24,147 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:24:24,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:24,925 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:24:24,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24 WrapperNode [2020-10-28 12:24:24,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:24,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:24:24,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:24:24,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:24:24,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:24,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (1/1) ... [2020-10-28 12:24:25,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:24:25,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:24:25,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:24:25,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:24:25,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (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 12:24:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:24:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:24:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:24:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:24:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:24:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:24:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:24:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:24:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:24:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:24:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:24:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:24:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:24:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:24:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:24:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:24:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:24:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:24:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:24:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:24:31,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:24:31,284 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:24:31,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:31 BoogieIcfgContainer [2020-10-28 12:24:31,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:24:31,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:24:31,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:24:31,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:24:31,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:24:22" (1/3) ... [2020-10-28 12:24:31,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:31, skipping insertion in model container [2020-10-28 12:24:31,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:24" (2/3) ... [2020-10-28 12:24:31,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:31, skipping insertion in model container [2020-10-28 12:24:31,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:31" (3/3) ... [2020-10-28 12:24:31,311 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2020-10-28 12:24:31,326 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:24:31,334 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:24:31,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:24:31,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:24:31,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:24:31,403 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:24:31,403 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:24:31,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:24:31,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:24:31,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:24:31,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:24:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:24:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 12:24:31,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:31,471 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] [2020-10-28 12:24:31,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:31,478 INFO L82 PathProgramCache]: Analyzing trace with hash 213979348, now seen corresponding path program 1 times [2020-10-28 12:24:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:31,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216501138] [2020-10-28 12:24:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-28 12:24:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:32,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:24:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:24:32,722 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:24:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:32,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:32,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:32,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:24:32,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:32,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:32,845 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 12:24:32,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216501138] [2020-10-28 12:24:32,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:32,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:24:32,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459526810] [2020-10-28 12:24:32,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:32,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:32,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:32,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:32,889 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:24:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:45,952 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:24:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:45,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-28 12:24:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:45,989 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:24:45,989 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:24:46,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 12:24:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:24:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:24:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:24:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:24:46,184 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 57 [2020-10-28 12:24:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:46,188 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:24:46,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:24:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:24:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 12:24:46,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:46,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:46,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:24:46,208 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2013224363, now seen corresponding path program 1 times [2020-10-28 12:24:46,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:46,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026570897] [2020-10-28 12:24:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:24:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:24:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-28 12:24:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:47,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:24:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 12:24:47,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:24:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:24:48,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:24:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:24:48,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:24:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:48,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026570897] [2020-10-28 12:24:48,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:48,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:24:48,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217684161] [2020-10-28 12:24:48,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:48,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:48,313 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:25:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:01,456 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-28 12:25:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:01,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-28 12:25:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:01,487 INFO L225 Difference]: With dead ends: 4673 [2020-10-28 12:25:01,487 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:25:01,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:25:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:25:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-28 12:25:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 12:25:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-28 12:25:01,610 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 132 [2020-10-28 12:25:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:01,611 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-28 12:25:01,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:25:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-28 12:25:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 12:25:01,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:01,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:01,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:25:01,615 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:01,616 INFO L82 PathProgramCache]: Analyzing trace with hash -879723939, now seen corresponding path program 1 times [2020-10-28 12:25:01,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:01,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801234905] [2020-10-28 12:25:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:25:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1359 [2020-10-28 12:25:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:25:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:25:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:25:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:25:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:25:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:03,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801234905] [2020-10-28 12:25:03,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:03,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:03,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307714158] [2020-10-28 12:25:03,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:03,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:03,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:03,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:03,617 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 7 states. [2020-10-28 12:25:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:20,591 INFO L93 Difference]: Finished difference Result 9488 states and 13787 transitions. [2020-10-28 12:25:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:25:20,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-28 12:25:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:20,636 INFO L225 Difference]: With dead ends: 9488 [2020-10-28 12:25:20,636 INFO L226 Difference]: Without dead ends: 6382 [2020-10-28 12:25:20,646 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 12:25:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2020-10-28 12:25:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 6294. [2020-10-28 12:25:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6294 states. [2020-10-28 12:25:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 8483 transitions. [2020-10-28 12:25:20,880 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 8483 transitions. Word has length 136 [2020-10-28 12:25:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:20,881 INFO L481 AbstractCegarLoop]: Abstraction has 6294 states and 8483 transitions. [2020-10-28 12:25:20,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 8483 transitions. [2020-10-28 12:25:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 12:25:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:20,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:20,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:25:20,887 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash -184312159, now seen corresponding path program 1 times [2020-10-28 12:25:20,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:20,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337349778] [2020-10-28 12:25:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 12:25:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-28 12:25:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:22,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:25:22,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:22,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:25:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:22,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:22,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:25:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 12:25:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:22,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:25:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:25:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:22,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337349778] [2020-10-28 12:25:22,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:22,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:22,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759462730] [2020-10-28 12:25:22,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:22,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:22,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:22,892 INFO L87 Difference]: Start difference. First operand 6294 states and 8483 transitions. Second operand 7 states. [2020-10-28 12:25:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:37,571 INFO L93 Difference]: Finished difference Result 19303 states and 26910 transitions. [2020-10-28 12:25:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:37,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-28 12:25:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:37,640 INFO L225 Difference]: With dead ends: 19303 [2020-10-28 12:25:37,640 INFO L226 Difference]: Without dead ends: 13015 [2020-10-28 12:25:37,664 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 12:25:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13015 states. [2020-10-28 12:25:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13015 to 12933. [2020-10-28 12:25:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12933 states. [2020-10-28 12:25:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12933 states to 12933 states and 17231 transitions. [2020-10-28 12:25:38,117 INFO L78 Accepts]: Start accepts. Automaton has 12933 states and 17231 transitions. Word has length 170 [2020-10-28 12:25:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:38,119 INFO L481 AbstractCegarLoop]: Abstraction has 12933 states and 17231 transitions. [2020-10-28 12:25:38,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 12933 states and 17231 transitions. [2020-10-28 12:25:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 12:25:38,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:38,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:25:38,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:25:38,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:38,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366106, now seen corresponding path program 1 times [2020-10-28 12:25:38,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:38,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427418964] [2020-10-28 12:25:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:39,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 12:25:39,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-28 12:25:39,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:39,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:25:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:39,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:39,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:39,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:25:39,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:39,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:39,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:39,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:25:39,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:39,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:25:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:25:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 12:25:40,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:40,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:25:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:40,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427418964] [2020-10-28 12:25:40,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:40,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:40,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466262673] [2020-10-28 12:25:40,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:40,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:40,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:40,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:40,450 INFO L87 Difference]: Start difference. First operand 12933 states and 17231 transitions. Second operand 7 states. [2020-10-28 12:25:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:57,647 INFO L93 Difference]: Finished difference Result 32951 states and 46047 transitions. [2020-10-28 12:25:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:57,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-28 12:25:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:57,733 INFO L225 Difference]: With dead ends: 32951 [2020-10-28 12:25:57,733 INFO L226 Difference]: Without dead ends: 20024 [2020-10-28 12:25:57,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 12:25:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20024 states. [2020-10-28 12:25:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20024 to 19940. [2020-10-28 12:25:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19940 states. [2020-10-28 12:25:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19940 states to 19940 states and 26426 transitions. [2020-10-28 12:25:58,332 INFO L78 Accepts]: Start accepts. Automaton has 19940 states and 26426 transitions. Word has length 252 [2020-10-28 12:25:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:58,333 INFO L481 AbstractCegarLoop]: Abstraction has 19940 states and 26426 transitions. [2020-10-28 12:25:58,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19940 states and 26426 transitions. [2020-10-28 12:25:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 12:25:58,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:58,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:25:58,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:25:58,340 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:58,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:58,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1768246318, now seen corresponding path program 1 times [2020-10-28 12:25:58,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:58,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330896864] [2020-10-28 12:25:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-28 12:25:59,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:25:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:59,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:25:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:00,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:26:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:26:00,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:26:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:26:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:00,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:00,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:26:00,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 12:26:00,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:00,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:00,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:26:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:26:00,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330896864] [2020-10-28 12:26:00,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:00,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:26:00,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944977202] [2020-10-28 12:26:00,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:00,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:00,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:00,749 INFO L87 Difference]: Start difference. First operand 19940 states and 26426 transitions. Second operand 7 states. [2020-10-28 12:26:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:21,702 INFO L93 Difference]: Finished difference Result 57816 states and 80533 transitions. [2020-10-28 12:26:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:26:21,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-28 12:26:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:21,834 INFO L225 Difference]: With dead ends: 57816 [2020-10-28 12:26:21,835 INFO L226 Difference]: Without dead ends: 30712 [2020-10-28 12:26:21,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:26:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30712 states. [2020-10-28 12:26:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30712 to 30510. [2020-10-28 12:26:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30510 states. [2020-10-28 12:26:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30510 states to 30510 states and 37564 transitions. [2020-10-28 12:26:22,778 INFO L78 Accepts]: Start accepts. Automaton has 30510 states and 37564 transitions. Word has length 256 [2020-10-28 12:26:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:22,778 INFO L481 AbstractCegarLoop]: Abstraction has 30510 states and 37564 transitions. [2020-10-28 12:26:22,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 30510 states and 37564 transitions. [2020-10-28 12:26:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 12:26:22,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:22,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:22,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:26:22,784 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1299583809, now seen corresponding path program 1 times [2020-10-28 12:26:22,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:22,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207424337] [2020-10-28 12:26:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 12:26:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-10-28 12:26:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:24,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:26:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:24,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:24,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:26:24,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:24,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:25,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:26:25,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-28 12:26:25,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:25,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 12:26:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:25,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207424337] [2020-10-28 12:26:25,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:25,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:25,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191014201] [2020-10-28 12:26:25,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:25,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:25,737 INFO L87 Difference]: Start difference. First operand 30510 states and 37564 transitions. Second operand 7 states. [2020-10-28 12:26:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:50,791 INFO L93 Difference]: Finished difference Result 77063 states and 98971 transitions. [2020-10-28 12:26:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:50,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-28 12:26:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:50,940 INFO L225 Difference]: With dead ends: 77063 [2020-10-28 12:26:50,940 INFO L226 Difference]: Without dead ends: 46563 [2020-10-28 12:26:50,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:26:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46563 states. [2020-10-28 12:26:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46563 to 44862. [2020-10-28 12:26:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44862 states. [2020-10-28 12:26:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44862 states to 44862 states and 53889 transitions. [2020-10-28 12:26:52,489 INFO L78 Accepts]: Start accepts. Automaton has 44862 states and 53889 transitions. Word has length 255 [2020-10-28 12:26:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:52,490 INFO L481 AbstractCegarLoop]: Abstraction has 44862 states and 53889 transitions. [2020-10-28 12:26:52,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 44862 states and 53889 transitions. [2020-10-28 12:26:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-28 12:26:52,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:52,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:26:52,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:26:52,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash -739565308, now seen corresponding path program 1 times [2020-10-28 12:26:52,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:52,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767350292] [2020-10-28 12:26:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-28 12:26:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:26:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-28 12:26:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:54,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:26:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:26:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:54,423 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:54,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:26:54,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:54,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:54,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:26:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:54,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:26:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:26:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:26:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 12:26:55,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:55,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:26:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 133 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:26:55,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767350292] [2020-10-28 12:26:55,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:55,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:26:55,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181411476] [2020-10-28 12:26:55,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:55,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:55,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:55,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:55,370 INFO L87 Difference]: Start difference. First operand 44862 states and 53889 transitions. Second operand 7 states. [2020-10-28 12:27:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:21,949 INFO L93 Difference]: Finished difference Result 109790 states and 134576 transitions. [2020-10-28 12:27:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:27:21,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-28 12:27:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:22,151 INFO L225 Difference]: With dead ends: 109790 [2020-10-28 12:27:22,152 INFO L226 Difference]: Without dead ends: 64934 [2020-10-28 12:27:22,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:27:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64934 states. [2020-10-28 12:27:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64934 to 62523. [2020-10-28 12:27:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62523 states. [2020-10-28 12:27:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62523 states to 62523 states and 76120 transitions. [2020-10-28 12:27:24,190 INFO L78 Accepts]: Start accepts. Automaton has 62523 states and 76120 transitions. Word has length 291 [2020-10-28 12:27:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:24,191 INFO L481 AbstractCegarLoop]: Abstraction has 62523 states and 76120 transitions. [2020-10-28 12:27:24,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 62523 states and 76120 transitions. [2020-10-28 12:27:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-28 12:27:24,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:24,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:27:24,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:27:24,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1054391812, now seen corresponding path program 1 times [2020-10-28 12:27:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784960898] [2020-10-28 12:27:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2296 [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:27:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:27:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:27,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:27,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:27,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:27,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:27:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:27,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:27:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:27:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:27,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:27:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:27:27,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784960898] [2020-10-28 12:27:27,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:27,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:27,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335858737] [2020-10-28 12:27:27,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:27,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:27,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:27,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:27,597 INFO L87 Difference]: Start difference. First operand 62523 states and 76120 transitions. Second operand 7 states. [2020-10-28 12:27:29,106 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:27:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:52,594 INFO L93 Difference]: Finished difference Result 155254 states and 203321 transitions. [2020-10-28 12:27:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:52,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-28 12:27:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:53,307 INFO L225 Difference]: With dead ends: 155254 [2020-10-28 12:27:53,308 INFO L226 Difference]: Without dead ends: 92737 [2020-10-28 12:27:53,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92737 states. [2020-10-28 12:27:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92737 to 92087. [2020-10-28 12:27:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92087 states. [2020-10-28 12:27:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92087 states to 92087 states and 111253 transitions. [2020-10-28 12:27:56,727 INFO L78 Accepts]: Start accepts. Automaton has 92087 states and 111253 transitions. Word has length 295 [2020-10-28 12:27:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:56,728 INFO L481 AbstractCegarLoop]: Abstraction has 92087 states and 111253 transitions. [2020-10-28 12:27:56,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 92087 states and 111253 transitions. [2020-10-28 12:27:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-28 12:27:56,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:56,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:27:56,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:27:56,754 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash -918602271, now seen corresponding path program 1 times [2020-10-28 12:27:56,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:56,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490356933] [2020-10-28 12:27:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking...