/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:50:31,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:50:31,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:50:31,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:50:31,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:50:31,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:50:31,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:50:31,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:50:31,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:50:31,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:50:31,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:50:31,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:50:31,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:50:31,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:50:31,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:50:31,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:50:31,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:50:31,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:50:31,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:50:31,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:50:31,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:50:31,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:50:31,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:50:31,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:50:31,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:50:31,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:50:31,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:50:31,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:50:31,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:50:31,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:50:31,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:50:31,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:50:31,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:50:31,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:50:31,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:50:31,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:50:31,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:50:31,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:50:31,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:50:31,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:50:31,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:50:31,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:50:31,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:50:31,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:50:31,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:50:31,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:50:31,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:50:31,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:50:31,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:50:31,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:50:31,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:50:31,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:50:31,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:50:31,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:50:31,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:50:31,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:50:31,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:50:31,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:50:31,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:50:31,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:50:31,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:50:31,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:50:31,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:50:31,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:50:31,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:50:31,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:50:31,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:50:31,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:50:31,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:50:31,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:50:31,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:50:31,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:50:31,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:50:31,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:50:31,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:50:31,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:50:31,635 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:50:31,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30.c [2020-10-29 08:50:31,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d3690b2/052be6912a99443bbb4e3073ff1f26d5/FLAGdc8c5d55a [2020-10-29 08:50:32,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:50:32,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label30.c [2020-10-29 08:50:33,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d3690b2/052be6912a99443bbb4e3073ff1f26d5/FLAGdc8c5d55a [2020-10-29 08:50:33,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d3690b2/052be6912a99443bbb4e3073ff1f26d5 [2020-10-29 08:50:33,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:50:33,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:50:33,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:50:33,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:50:33,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:50:33,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:50:33" (1/1) ... [2020-10-29 08:50:33,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c3986b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:33, skipping insertion in model container [2020-10-29 08:50:33,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:50:33" (1/1) ... [2020-10-29 08:50:33,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:50:33,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:50:35,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:50:35,634 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:50:36,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:50:36,850 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:50:36,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36 WrapperNode [2020-10-29 08:50:36,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:50:36,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:50:36,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:50:36,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:50:36,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:36,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (1/1) ... [2020-10-29 08:50:37,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:50:37,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:50:37,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:50:37,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:50:37,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (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 [2020-10-29 08:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:50:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:50:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:50:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:50:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:50:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:50:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:50:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:50:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:50:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:50:51,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:50:51,424 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:50:51,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:50:51 BoogieIcfgContainer [2020-10-29 08:50:51,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:50:51,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:50:51,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:50:51,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:50:51,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:50:33" (1/3) ... [2020-10-29 08:50:51,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:50:51, skipping insertion in model container [2020-10-29 08:50:51,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:50:36" (2/3) ... [2020-10-29 08:50:51,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:50:51, skipping insertion in model container [2020-10-29 08:50:51,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:50:51" (3/3) ... [2020-10-29 08:50:51,444 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label30.c [2020-10-29 08:50:51,457 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:50:51,464 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:50:51,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:50:51,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:50:51,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:50:51,527 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:50:51,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:50:51,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:50:51,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:50:51,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:50:51,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:50:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:50:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 08:50:51,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:50:51,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:50:51,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:50:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:50:51,607 INFO L82 PathProgramCache]: Analyzing trace with hash -945310858, now seen corresponding path program 1 times [2020-10-29 08:50:51,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:50:51,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880977209] [2020-10-29 08:50:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:50:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:50:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:50:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 08:50:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:50:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 08:50:52,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:50:52,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:50:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:50:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:50:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 08:50:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:50:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:50:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:50:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:50:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:50:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:50:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:50:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:50:52,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:50:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:50:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:50:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:50:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:50:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:50:53,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880977209] [2020-10-29 08:50:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:50:53,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:50:53,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932264383] [2020-10-29 08:50:53,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:50:53,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:50:53,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:50:53,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:50:53,070 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:51:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:51:32,287 INFO L93 Difference]: Finished difference Result 6487 states and 12311 transitions. [2020-10-29 08:51:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:51:32,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-29 08:51:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:51:32,351 INFO L225 Difference]: With dead ends: 6487 [2020-10-29 08:51:32,351 INFO L226 Difference]: Without dead ends: 4638 [2020-10-29 08:51:32,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:51:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2020-10-29 08:51:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4629. [2020-10-29 08:51:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2020-10-29 08:51:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7760 transitions. [2020-10-29 08:51:32,748 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7760 transitions. Word has length 55 [2020-10-29 08:51:32,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:51:32,752 INFO L481 AbstractCegarLoop]: Abstraction has 4629 states and 7760 transitions. [2020-10-29 08:51:32,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:51:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7760 transitions. [2020-10-29 08:51:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 08:51:32,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:51:32,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:51:32,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:51:32,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:51:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:51:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1778804920, now seen corresponding path program 1 times [2020-10-29 08:51:32,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:51:32,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610240501] [2020-10-29 08:51:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:51:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:34,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 08:51:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:51:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-29 08:51:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:34,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:51:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:51:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:51:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:51:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:51:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:51:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:51:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:51:34,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:34,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:51:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:51:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:51:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:51:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:51:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:51:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:51:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:51:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:34,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:51:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:51:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 08:51:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:51:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:51:35,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610240501] [2020-10-29 08:51:35,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:51:35,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:51:35,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50300705] [2020-10-29 08:51:35,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:51:35,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:51:35,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:51:35,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:51:35,005 INFO L87 Difference]: Start difference. First operand 4629 states and 7760 transitions. Second operand 7 states. [2020-10-29 08:52:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:52:12,287 INFO L93 Difference]: Finished difference Result 10807 states and 17798 transitions. [2020-10-29 08:52:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:52:12,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-29 08:52:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:52:12,332 INFO L225 Difference]: With dead ends: 10807 [2020-10-29 08:52:12,332 INFO L226 Difference]: Without dead ends: 6184 [2020-10-29 08:52:12,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:52:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2020-10-29 08:52:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 6144. [2020-10-29 08:52:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6144 states. [2020-10-29 08:52:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 9680 transitions. [2020-10-29 08:52:12,569 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 9680 transitions. Word has length 144 [2020-10-29 08:52:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:52:12,570 INFO L481 AbstractCegarLoop]: Abstraction has 6144 states and 9680 transitions. [2020-10-29 08:52:12,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:52:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 9680 transitions. [2020-10-29 08:52:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 08:52:12,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:52:12,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:52:12,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:52:12,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:52:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:52:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1072124876, now seen corresponding path program 1 times [2020-10-29 08:52:12,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:52:12,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861389442] [2020-10-29 08:52:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:52:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:52:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-29 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:52:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:52:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:52:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:52:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:52:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:14,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:52:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:52:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:52:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:52:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:52:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:52:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:52:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 08:52:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:14,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:52:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:52:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:52:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:52:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:52:14,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861389442] [2020-10-29 08:52:14,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:52:14,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:52:14,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412842187] [2020-10-29 08:52:14,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:52:14,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:52:14,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:52:14,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:52:14,899 INFO L87 Difference]: Start difference. First operand 6144 states and 9680 transitions. Second operand 7 states. [2020-10-29 08:53:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:53:06,307 INFO L93 Difference]: Finished difference Result 18696 states and 30333 transitions. [2020-10-29 08:53:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:53:06,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-29 08:53:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:53:06,383 INFO L225 Difference]: With dead ends: 18696 [2020-10-29 08:53:06,384 INFO L226 Difference]: Without dead ends: 12558 [2020-10-29 08:53:06,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:53:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12558 states. [2020-10-29 08:53:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12558 to 12231. [2020-10-29 08:53:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12231 states. [2020-10-29 08:53:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12231 states to 12231 states and 17420 transitions. [2020-10-29 08:53:06,798 INFO L78 Accepts]: Start accepts. Automaton has 12231 states and 17420 transitions. Word has length 162 [2020-10-29 08:53:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:53:06,799 INFO L481 AbstractCegarLoop]: Abstraction has 12231 states and 17420 transitions. [2020-10-29 08:53:06,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:53:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 12231 states and 17420 transitions. [2020-10-29 08:53:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 08:53:06,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:53:06,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:53:06,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:53:06,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:53:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:53:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1008664834, now seen corresponding path program 1 times [2020-10-29 08:53:06,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:53:06,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035639875] [2020-10-29 08:53:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:53:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 08:53:08,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:53:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1851 [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 08:53:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:53:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:53:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:08,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:08,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:08,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:53:08,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:53:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:53:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:53:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:53:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:09,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:09,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:53:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:53:09,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 08:53:09,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:53:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:53:09,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035639875] [2020-10-29 08:53:09,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:53:09,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:53:09,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411938482] [2020-10-29 08:53:09,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:53:09,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:53:09,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:53:09,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:53:09,421 INFO L87 Difference]: Start difference. First operand 12231 states and 17420 transitions. Second operand 8 states. [2020-10-29 08:54:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:54:00,457 INFO L93 Difference]: Finished difference Result 36855 states and 55758 transitions. [2020-10-29 08:54:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:54:00,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-29 08:54:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:54:00,581 INFO L225 Difference]: With dead ends: 36855 [2020-10-29 08:54:00,581 INFO L226 Difference]: Without dead ends: 24630 [2020-10-29 08:54:00,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:54:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24630 states. [2020-10-29 08:54:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24630 to 24351. [2020-10-29 08:54:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24351 states. [2020-10-29 08:54:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24351 states to 24351 states and 36134 transitions. [2020-10-29 08:54:01,325 INFO L78 Accepts]: Start accepts. Automaton has 24351 states and 36134 transitions. Word has length 189 [2020-10-29 08:54:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:54:01,327 INFO L481 AbstractCegarLoop]: Abstraction has 24351 states and 36134 transitions. [2020-10-29 08:54:01,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:54:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24351 states and 36134 transitions. [2020-10-29 08:54:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 08:54:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:54:01,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:54:01,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:54:01,333 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:54:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:54:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 262262546, now seen corresponding path program 1 times [2020-10-29 08:54:01,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:54:01,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604781287] [2020-10-29 08:54:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:54:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 08:54:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:54:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:54:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:06,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:54:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 08:54:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 08:54:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:54:06,545 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:54:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:54:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:06,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:54:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:54:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:54:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:06,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:54:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:54:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:54:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:54:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:54:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 08:54:06,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:54:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:54:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:06,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:54:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:54:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:54:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:54:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 08:54:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:06,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:06,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:54:06,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:54:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 08:54:06,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:06,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:54:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:54:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:54:06,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:54:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 111 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:54:07,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604781287] [2020-10-29 08:54:07,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:54:07,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:54:07,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641703604] [2020-10-29 08:54:07,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:54:07,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:54:07,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:54:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:54:07,117 INFO L87 Difference]: Start difference. First operand 24351 states and 36134 transitions. Second operand 6 states. [2020-10-29 08:54:07,930 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66