/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:26:32,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:26:32,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:26:32,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:26:32,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:26:32,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:26:32,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:26:32,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:26:32,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:26:32,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:26:32,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:26:32,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:26:32,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:26:32,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:26:32,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:26:32,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:26:32,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:26:32,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:26:32,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:26:32,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:26:32,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:26:32,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:26:32,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:26:32,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:26:32,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:26:32,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:26:32,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:26:32,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:26:32,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:26:32,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:26:32,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:26:32,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:26:32,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:26:32,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:26:32,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:26:32,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:26:32,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:26:32,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:26:32,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:26:32,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:26:32,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:26:32,300 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 12:26:32,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:26:32,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:26:32,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:26:32,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:26:32,373 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:26:32,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:26:32,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:26:32,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:26:32,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:26:32,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:26:32,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:26:32,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:26:32,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:26:32,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:26:32,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:26:32,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:26:32,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:26:32,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:26:32,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:26:32,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:26:32,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:26:32,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:26:32,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:26:32,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:26:32,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:26:32,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:26:32,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:26:32,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:26:32,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:26:32,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:26:32,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:26:32,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:26:32,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:26:32,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:26:32,909 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:26:32,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-28 12:26:33,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cbbbf98/f7cd9a522aba491ba7656bc328f734e8/FLAGdad92067f [2020-10-28 12:26:34,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:26:34,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-28 12:26:34,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cbbbf98/f7cd9a522aba491ba7656bc328f734e8/FLAGdad92067f [2020-10-28 12:26:34,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0cbbbf98/f7cd9a522aba491ba7656bc328f734e8 [2020-10-28 12:26:34,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:26:34,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:26:34,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:34,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:26:34,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:26:34,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:34" (1/1) ... [2020-10-28 12:26:34,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cd7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:34, skipping insertion in model container [2020-10-28 12:26:34,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:34" (1/1) ... [2020-10-28 12:26:34,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:26:34,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:26:36,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:36,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:26:36,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:36,912 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:26:36,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36 WrapperNode [2020-10-28 12:26:36,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:36,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:26:36,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:26:36,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:26:36,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:36,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (1/1) ... [2020-10-28 12:26:37,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:26:37,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:26:37,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:26:37,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:26:37,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (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 12:26:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:26:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:26:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:26:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:26:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:26:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:26:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:26:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:26:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:26:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:26:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:26:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:26:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:26:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:26:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:26:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:26:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:26:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:26:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:26:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:26:43,843 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:26:43,843 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:26:43,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:43 BoogieIcfgContainer [2020-10-28 12:26:43,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:26:43,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:26:43,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:26:43,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:26:43,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:26:34" (1/3) ... [2020-10-28 12:26:43,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685ca518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:43, skipping insertion in model container [2020-10-28 12:26:43,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:36" (2/3) ... [2020-10-28 12:26:43,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685ca518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:43, skipping insertion in model container [2020-10-28 12:26:43,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:43" (3/3) ... [2020-10-28 12:26:43,863 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label54.c [2020-10-28 12:26:43,880 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:26:43,888 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:26:43,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:26:44,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:26:44,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:26:44,019 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:26:44,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:26:44,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:26:44,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:26:44,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:26:44,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:26:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:26:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 12:26:44,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:44,082 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] [2020-10-28 12:26:44,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1036836092, now seen corresponding path program 1 times [2020-10-28 12:26:44,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825278956] [2020-10-28 12:26:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 12:26:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-28 12:26:45,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:45,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 12:26:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:26:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:45,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:45,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:26:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:45,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:45,462 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 12:26:45,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825278956] [2020-10-28 12:26:45,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:45,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:26:45,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535424892] [2020-10-28 12:26:45,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:26:45,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:45,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:26:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:26:45,500 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:27:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:04,252 INFO L93 Difference]: Finished difference Result 3290 states and 6312 transitions. [2020-10-28 12:27:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:27:04,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 12:27:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:04,304 INFO L225 Difference]: With dead ends: 3290 [2020-10-28 12:27:04,304 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:27:04,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:27:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-28 12:27:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-28 12:27:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3488 transitions. [2020-10-28 12:27:04,530 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3488 transitions. Word has length 40 [2020-10-28 12:27:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:04,531 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3488 transitions. [2020-10-28 12:27:04,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:27:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3488 transitions. [2020-10-28 12:27:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 12:27:04,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:04,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:04,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:27:04,539 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1647940978, now seen corresponding path program 1 times [2020-10-28 12:27:04,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:04,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338311324] [2020-10-28 12:27:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:06,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:06,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:27:06,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-28 12:27:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:06,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:27:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:27:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:06,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:06,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:27:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:06,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:27:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:27:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 12:27:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:27:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:06,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338311324] [2020-10-28 12:27:06,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:06,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:06,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314895881] [2020-10-28 12:27:06,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:06,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:06,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:06,746 INFO L87 Difference]: Start difference. First operand 2332 states and 3488 transitions. Second operand 7 states. [2020-10-28 12:27:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:24,028 INFO L93 Difference]: Finished difference Result 7127 states and 10725 transitions. [2020-10-28 12:27:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:27:24,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 12:27:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:24,061 INFO L225 Difference]: With dead ends: 7127 [2020-10-28 12:27:24,061 INFO L226 Difference]: Without dead ends: 4801 [2020-10-28 12:27:24,069 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 12:27:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-10-28 12:27:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4714. [2020-10-28 12:27:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4714 states. [2020-10-28 12:27:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 6523 transitions. [2020-10-28 12:27:24,241 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 6523 transitions. Word has length 119 [2020-10-28 12:27:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:24,242 INFO L481 AbstractCegarLoop]: Abstraction has 4714 states and 6523 transitions. [2020-10-28 12:27:24,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 6523 transitions. [2020-10-28 12:27:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 12:27:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:24,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:24,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:27:24,247 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:24,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:24,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1218272796, now seen corresponding path program 1 times [2020-10-28 12:27:24,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:24,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196665042] [2020-10-28 12:27:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:26,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:27:26,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-28 12:27:26,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:26,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:27:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:27:26,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:26,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:26,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:27:26,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 12:27:26,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:26,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:27:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:26,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196665042] [2020-10-28 12:27:26,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:26,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:27:26,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241871856] [2020-10-28 12:27:26,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:27:26,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:27:26,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:27:26,742 INFO L87 Difference]: Start difference. First operand 4714 states and 6523 transitions. Second operand 8 states. [2020-10-28 12:27:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:46,304 INFO L93 Difference]: Finished difference Result 14431 states and 20486 transitions. [2020-10-28 12:27:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:27:46,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-28 12:27:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:46,366 INFO L225 Difference]: With dead ends: 14431 [2020-10-28 12:27:46,366 INFO L226 Difference]: Without dead ends: 9723 [2020-10-28 12:27:46,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:27:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2020-10-28 12:27:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 9617. [2020-10-28 12:27:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9617 states. [2020-10-28 12:27:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9617 states to 9617 states and 13388 transitions. [2020-10-28 12:27:46,730 INFO L78 Accepts]: Start accepts. Automaton has 9617 states and 13388 transitions. Word has length 148 [2020-10-28 12:27:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:46,731 INFO L481 AbstractCegarLoop]: Abstraction has 9617 states and 13388 transitions. [2020-10-28 12:27:46,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:27:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9617 states and 13388 transitions. [2020-10-28 12:27:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 12:27:46,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:46,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:46,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:27:46,738 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1865245108, now seen corresponding path program 1 times [2020-10-28 12:27:46,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:46,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097598093] [2020-10-28 12:27:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:27:48,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1454 [2020-10-28 12:27:48,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:27:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:27:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:27:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 12:27:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:27:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:27:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:48,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097598093] [2020-10-28 12:27:48,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:48,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:48,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793545124] [2020-10-28 12:27:48,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:48,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:48,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:48,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:48,871 INFO L87 Difference]: Start difference. First operand 9617 states and 13388 transitions. Second operand 7 states. [2020-10-28 12:27:49,019 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:28:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:07,452 INFO L93 Difference]: Finished difference Result 27737 states and 40101 transitions. [2020-10-28 12:28:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:07,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-28 12:28:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:07,552 INFO L225 Difference]: With dead ends: 27737 [2020-10-28 12:28:07,552 INFO L226 Difference]: Without dead ends: 18126 [2020-10-28 12:28:07,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 12:28:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18126 states. [2020-10-28 12:28:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18126 to 17849. [2020-10-28 12:28:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17849 states. [2020-10-28 12:28:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17849 states to 17849 states and 23069 transitions. [2020-10-28 12:28:08,196 INFO L78 Accepts]: Start accepts. Automaton has 17849 states and 23069 transitions. Word has length 160 [2020-10-28 12:28:08,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:08,197 INFO L481 AbstractCegarLoop]: Abstraction has 17849 states and 23069 transitions. [2020-10-28 12:28:08,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 17849 states and 23069 transitions. [2020-10-28 12:28:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 12:28:08,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:08,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:08,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:28:08,201 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:08,202 INFO L82 PathProgramCache]: Analyzing trace with hash -713931602, now seen corresponding path program 1 times [2020-10-28 12:28:08,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:08,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134275341] [2020-10-28 12:28:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:09,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:09,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:28:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 12:28:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:09,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:09,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:09,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:09,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:28:09,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:09,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:28:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:28:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:28:09,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:28:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:10,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134275341] [2020-10-28 12:28:10,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:10,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:28:10,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070379525] [2020-10-28 12:28:10,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:28:10,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:28:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:28:10,111 INFO L87 Difference]: Start difference. First operand 17849 states and 23069 transitions. Second operand 5 states. [2020-10-28 12:28:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:24,512 INFO L93 Difference]: Finished difference Result 49202 states and 66478 transitions. [2020-10-28 12:28:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:28:24,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-28 12:28:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:24,640 INFO L225 Difference]: With dead ends: 49202 [2020-10-28 12:28:24,641 INFO L226 Difference]: Without dead ends: 32126 [2020-10-28 12:28:24,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32126 states. [2020-10-28 12:28:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32126 to 32043. [2020-10-28 12:28:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32043 states. [2020-10-28 12:28:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32043 states to 32043 states and 40816 transitions. [2020-10-28 12:28:25,906 INFO L78 Accepts]: Start accepts. Automaton has 32043 states and 40816 transitions. Word has length 185 [2020-10-28 12:28:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:25,907 INFO L481 AbstractCegarLoop]: Abstraction has 32043 states and 40816 transitions. [2020-10-28 12:28:25,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:28:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 32043 states and 40816 transitions. [2020-10-28 12:28:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 12:28:25,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:25,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:25,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:28:25,911 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1187627156, now seen corresponding path program 1 times [2020-10-28 12:28:25,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:25,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144557828] [2020-10-28 12:28:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 12:28:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2264 [2020-10-28 12:28:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:28,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:28:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:28,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:28:28,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:28,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:28,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:28:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-28 12:28:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:28,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:28:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:29,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144557828] [2020-10-28 12:28:29,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:29,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:28:29,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130740103] [2020-10-28 12:28:29,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:28:29,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:28:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:28:29,199 INFO L87 Difference]: Start difference. First operand 32043 states and 40816 transitions. Second operand 8 states. [2020-10-28 12:28:29,336 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:28:51,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:51,540 INFO L93 Difference]: Finished difference Result 67271 states and 86394 transitions. [2020-10-28 12:28:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 12:28:51,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-28 12:28:51,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:51,699 INFO L225 Difference]: With dead ends: 67271 [2020-10-28 12:28:51,699 INFO L226 Difference]: Without dead ends: 44632 [2020-10-28 12:28:51,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 12:28:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44632 states. [2020-10-28 12:28:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44632 to 43582. [2020-10-28 12:28:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43582 states. [2020-10-28 12:28:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43582 states to 43582 states and 54745 transitions. [2020-10-28 12:28:52,761 INFO L78 Accepts]: Start accepts. Automaton has 43582 states and 54745 transitions. Word has length 188 [2020-10-28 12:28:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:52,762 INFO L481 AbstractCegarLoop]: Abstraction has 43582 states and 54745 transitions. [2020-10-28 12:28:52,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:28:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 43582 states and 54745 transitions. [2020-10-28 12:28:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 12:28:52,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:52,777 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:28:52,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:28:52,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash 818176944, now seen corresponding path program 1 times [2020-10-28 12:28:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:52,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686857370] [2020-10-28 12:28:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 12:28:54,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-28 12:28:54,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:28:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:28:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:28:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:28:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:28:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:28:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:55,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:28:55,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:28:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:28:55,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686857370] [2020-10-28 12:28:55,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:55,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:28:55,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524569577] [2020-10-28 12:28:55,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:55,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:55,682 INFO L87 Difference]: Start difference. First operand 43582 states and 54745 transitions. Second operand 7 states. [2020-10-28 12:29:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:17,300 INFO L93 Difference]: Finished difference Result 94491 states and 123104 transitions. [2020-10-28 12:29:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:17,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-28 12:29:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:17,459 INFO L225 Difference]: With dead ends: 94491 [2020-10-28 12:29:17,459 INFO L226 Difference]: Without dead ends: 45197 [2020-10-28 12:29:17,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 12:29:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45197 states. [2020-10-28 12:29:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45197 to 41075. [2020-10-28 12:29:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-28 12:29:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 49623 transitions. [2020-10-28 12:29:18,364 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 49623 transitions. Word has length 228 [2020-10-28 12:29:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:18,364 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 49623 transitions. [2020-10-28 12:29:18,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 49623 transitions. [2020-10-28 12:29:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-28 12:29:18,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:18,370 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:29:18,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:29:18,370 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1889699892, now seen corresponding path program 1 times [2020-10-28 12:29:18,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:18,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983393100] [2020-10-28 12:29:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:21,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-28 12:29:21,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2641 [2020-10-28 12:29:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:21,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:29:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:29:21,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:29:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:29:21,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 12:29:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:21,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:29:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:29:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:29:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:29:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:21,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:29:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:29:21,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983393100] [2020-10-28 12:29:21,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:21,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:29:21,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589236211] [2020-10-28 12:29:21,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:29:21,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:21,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:29:21,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:29:21,959 INFO L87 Difference]: Start difference. First operand 41075 states and 49623 transitions. Second operand 5 states. [2020-10-28 12:29:23,033 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:29:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:40,874 INFO L93 Difference]: Finished difference Result 83769 states and 101322 transitions. [2020-10-28 12:29:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:29:40,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2020-10-28 12:29:40,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:41,009 INFO L225 Difference]: With dead ends: 83769 [2020-10-28 12:29:41,010 INFO L226 Difference]: Without dead ends: 42700 [2020-10-28 12:29:41,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:29:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42700 states. [2020-10-28 12:29:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42700 to 40318. [2020-10-28 12:29:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40318 states. [2020-10-28 12:29:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40318 states to 40318 states and 47621 transitions. [2020-10-28 12:29:42,006 INFO L78 Accepts]: Start accepts. Automaton has 40318 states and 47621 transitions. Word has length 278 [2020-10-28 12:29:42,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:42,007 INFO L481 AbstractCegarLoop]: Abstraction has 40318 states and 47621 transitions. [2020-10-28 12:29:42,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:29:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 40318 states and 47621 transitions. [2020-10-28 12:29:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 12:29:42,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:42,013 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:29:42,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:29:42,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1761452558, now seen corresponding path program 1 times [2020-10-28 12:29:42,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:42,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903325231] [2020-10-28 12:29:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 12:29:44,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2214 [2020-10-28 12:29:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:44,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:29:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:29:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:44,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:44,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:29:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:44,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:44,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:29:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:29:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:44,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:29:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:44,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:29:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:29:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:29:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:44,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:29:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 117 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:29:45,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903325231] [2020-10-28 12:29:45,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:45,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:29:45,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271289839] [2020-10-28 12:29:45,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:29:45,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:45,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:29:45,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:29:45,133 INFO L87 Difference]: Start difference. First operand 40318 states and 47621 transitions. Second operand 6 states. [2020-10-28 12:30:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:08,081 INFO L93 Difference]: Finished difference Result 95144 states and 115451 transitions. [2020-10-28 12:30:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:30:08,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 279 [2020-10-28 12:30:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:08,268 INFO L225 Difference]: With dead ends: 95144 [2020-10-28 12:30:08,268 INFO L226 Difference]: Without dead ends: 54832 [2020-10-28 12:30:08,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:30:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54832 states. [2020-10-28 12:30:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54832 to 53190. [2020-10-28 12:30:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53190 states. [2020-10-28 12:30:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53190 states to 53190 states and 62861 transitions. [2020-10-28 12:30:10,139 INFO L78 Accepts]: Start accepts. Automaton has 53190 states and 62861 transitions. Word has length 279 [2020-10-28 12:30:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:10,139 INFO L481 AbstractCegarLoop]: Abstraction has 53190 states and 62861 transitions. [2020-10-28 12:30:10,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:30:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 53190 states and 62861 transitions. [2020-10-28 12:30:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-28 12:30:10,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:10,154 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:30:10,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:30:10,155 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:10,156 INFO L82 PathProgramCache]: Analyzing trace with hash -137362324, now seen corresponding path program 1 times [2020-10-28 12:30:10,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:10,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040447380] [2020-10-28 12:30:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:12,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:30:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:30:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:12,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:12,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:30:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:30:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:12,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:30:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:30:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:30:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:30:13,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040447380] [2020-10-28 12:30:13,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:13,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:30:13,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004520512] [2020-10-28 12:30:13,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:13,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:13,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:13,063 INFO L87 Difference]: Start difference. First operand 53190 states and 62861 transitions. Second operand 7 states. [2020-10-28 12:30:13,223 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66