/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/Problem13_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:22:04,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:22:04,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:22:04,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:22:04,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:22:04,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:22:04,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:22:04,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:22:04,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:22:04,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:22:04,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:22:04,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:22:04,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:22:04,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:22:04,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:22:04,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:22:04,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:22:04,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:22:04,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:22:04,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:22:04,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:22:04,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:22:04,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:22:04,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:22:04,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:22:04,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:22:04,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:22:04,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:22:04,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:22:04,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:22:04,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:22:04,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:22:04,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:22:04,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:22:04,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:22:04,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:22:04,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:22:04,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:22:04,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:22:04,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:22:04,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:22:04,914 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 07:22:04,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:22:04,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:22:04,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:22:04,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:22:04,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:22:04,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:22:04,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:22:04,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:22:04,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:22:04,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:22:04,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:22:04,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:22:04,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:22:04,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:22:04,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:22:04,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:22:04,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:22:04,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:22:04,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:22:04,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:22:04,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:22:04,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:22:04,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:22:04,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:22:04,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:22:04,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:22:04,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:22:04,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:22:04,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:22:04,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:22:05,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:22:05,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:22:05,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:22:05,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:22:05,470 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:22:05,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-29 07:22:05,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f0f06ef4/91b2508d759e4c3ca1f6424b8422dedd/FLAG580dc86a8 [2020-10-29 07:22:06,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:22:06,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-29 07:22:06,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f0f06ef4/91b2508d759e4c3ca1f6424b8422dedd/FLAG580dc86a8 [2020-10-29 07:22:07,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f0f06ef4/91b2508d759e4c3ca1f6424b8422dedd [2020-10-29 07:22:07,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:22:07,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:22:07,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:22:07,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:22:07,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:22:07,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:22:07" (1/1) ... [2020-10-29 07:22:07,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:07, skipping insertion in model container [2020-10-29 07:22:07,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:22:07" (1/1) ... [2020-10-29 07:22:07,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:22:07,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:22:09,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:22:09,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:22:09,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:22:09,993 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:22:09,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09 WrapperNode [2020-10-29 07:22:09,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:22:09,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:22:09,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:22:09,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:22:10,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (1/1) ... [2020-10-29 07:22:10,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:22:10,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:22:10,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:22:10,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:22:10,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (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 07:22:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:22:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:22:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:22:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:22:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:22:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:22:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:22:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:22:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:22:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:22:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:22:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:22:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:22:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:22:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:22:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:22:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:22:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:22:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:22:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:22:21,379 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:22:21,379 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:22:21,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:21 BoogieIcfgContainer [2020-10-29 07:22:21,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:22:21,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:22:21,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:22:21,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:22:21,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:22:07" (1/3) ... [2020-10-29 07:22:21,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5172eb35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:21, skipping insertion in model container [2020-10-29 07:22:21,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:22:09" (2/3) ... [2020-10-29 07:22:21,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5172eb35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:21, skipping insertion in model container [2020-10-29 07:22:21,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:21" (3/3) ... [2020-10-29 07:22:21,397 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label49.c [2020-10-29 07:22:21,412 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:22:21,420 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:22:21,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:22:21,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:22:21,479 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:22:21,479 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:22:21,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:22:21,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:22:21,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:22:21,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:22:21,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:22:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:22:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 07:22:21,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:21,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:21,541 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2101397850, now seen corresponding path program 1 times [2020-10-29 07:22:21,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:21,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771131678] [2020-10-29 07:22:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:22,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:22:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-29 07:22:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:22,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 07:22:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:22:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:22:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:22,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:22,915 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 07:22:22,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771131678] [2020-10-29 07:22:22,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:22,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:22:22,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661791249] [2020-10-29 07:22:22,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:22:22,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:22:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:22:22,955 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:22:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:48,120 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-29 07:22:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:22:48,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-29 07:22:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:48,191 INFO L225 Difference]: With dead ends: 4085 [2020-10-29 07:22:48,191 INFO L226 Difference]: Without dead ends: 2873 [2020-10-29 07:22:48,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-29 07:22:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-29 07:22:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-29 07:22:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-29 07:22:48,455 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 65 [2020-10-29 07:22:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:48,456 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-29 07:22:48,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:22:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-29 07:22:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 07:22:48,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:48,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:22:48,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:22:48,466 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash -478410943, now seen corresponding path program 1 times [2020-10-29 07:22:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:48,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91387634] [2020-10-29 07:22:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:51,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:51,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 07:22:51,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:22:51,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2906 [2020-10-29 07:22:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:51,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:22:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 07:22:51,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:22:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:51,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:51,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:51,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:22:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:22:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:22:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:22:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:51,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:51,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:22:51,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:22:51,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:51,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:22:51,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:52,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91387634] [2020-10-29 07:22:52,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:22:52,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:22:52,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994763889] [2020-10-29 07:22:52,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:22:52,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:52,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:22:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:22:52,008 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 6 states. [2020-10-29 07:23:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:19,826 INFO L93 Difference]: Finished difference Result 7178 states and 12049 transitions. [2020-10-29 07:23:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:23:19,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-29 07:23:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:19,875 INFO L225 Difference]: With dead ends: 7178 [2020-10-29 07:23:19,875 INFO L226 Difference]: Without dead ends: 5249 [2020-10-29 07:23:19,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:23:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2020-10-29 07:23:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 5227. [2020-10-29 07:23:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5227 states. [2020-10-29 07:23:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 7999 transitions. [2020-10-29 07:23:20,070 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 7999 transitions. Word has length 140 [2020-10-29 07:23:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:20,071 INFO L481 AbstractCegarLoop]: Abstraction has 5227 states and 7999 transitions. [2020-10-29 07:23:20,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:23:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 7999 transitions. [2020-10-29 07:23:20,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 07:23:20,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:20,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 07:23:20,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:23:20,081 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash -493007889, now seen corresponding path program 1 times [2020-10-29 07:23:20,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:20,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404487943] [2020-10-29 07:23:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:25,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:25,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 07:23:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:23:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:23:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:25,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:23:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 07:23:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:25,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:23:25,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:25,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:23:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 07:23:25,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:23:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 07:23:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:26,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:26,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:23:26,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 07:23:26,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:26,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:23:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:23:26,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404487943] [2020-10-29 07:23:26,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:26,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:26,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356641074] [2020-10-29 07:23:26,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:23:26,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:23:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:23:26,525 INFO L87 Difference]: Start difference. First operand 5227 states and 7999 transitions. Second operand 8 states. [2020-10-29 07:23:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:52,123 INFO L93 Difference]: Finished difference Result 15564 states and 24583 transitions. [2020-10-29 07:23:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:23:52,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-10-29 07:23:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:52,195 INFO L225 Difference]: With dead ends: 15564 [2020-10-29 07:23:52,195 INFO L226 Difference]: Without dead ends: 10343 [2020-10-29 07:23:52,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:23:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-10-29 07:23:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 10292. [2020-10-29 07:23:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10292 states. [2020-10-29 07:23:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10292 states to 10292 states and 14598 transitions. [2020-10-29 07:23:52,573 INFO L78 Accepts]: Start accepts. Automaton has 10292 states and 14598 transitions. Word has length 236 [2020-10-29 07:23:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:52,573 INFO L481 AbstractCegarLoop]: Abstraction has 10292 states and 14598 transitions. [2020-10-29 07:23:52,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:23:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 10292 states and 14598 transitions. [2020-10-29 07:23:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 07:23:52,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:52,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:52,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:23:52,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:52,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1708954701, now seen corresponding path program 1 times [2020-10-29 07:23:52,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:52,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149227681] [2020-10-29 07:23:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 07:23:57,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:23:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 07:23:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:57,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:57,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:57,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:23:57,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:57,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:23:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:23:58,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:23:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:23:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:23:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-29 07:23:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:23:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:23:58,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149227681] [2020-10-29 07:23:58,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:58,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:23:58,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546088952] [2020-10-29 07:23:58,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:23:58,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:23:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:23:58,686 INFO L87 Difference]: Start difference. First operand 10292 states and 14598 transitions. Second operand 8 states. [2020-10-29 07:24:00,337 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:24:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:41,431 INFO L93 Difference]: Finished difference Result 29323 states and 44052 transitions. [2020-10-29 07:24:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:24:41,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-10-29 07:24:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:41,564 INFO L225 Difference]: With dead ends: 29323 [2020-10-29 07:24:41,565 INFO L226 Difference]: Without dead ends: 19037 [2020-10-29 07:24:41,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 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 07:24:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19037 states. [2020-10-29 07:24:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19037 to 18959. [2020-10-29 07:24:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18959 states. [2020-10-29 07:24:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18959 states to 18959 states and 27010 transitions. [2020-10-29 07:24:42,341 INFO L78 Accepts]: Start accepts. Automaton has 18959 states and 27010 transitions. Word has length 244 [2020-10-29 07:24:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:42,342 INFO L481 AbstractCegarLoop]: Abstraction has 18959 states and 27010 transitions. [2020-10-29 07:24:42,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:24:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18959 states and 27010 transitions. [2020-10-29 07:24:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 07:24:42,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:42,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:24:42,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:24:42,361 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1967260691, now seen corresponding path program 1 times [2020-10-29 07:24:42,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:42,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383188996] [2020-10-29 07:24:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:47,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:24:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:24:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:47,664 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:24:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:47,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:47,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:24:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:47,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:24:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:24:47,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:47,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:24:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:24:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:48,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:48,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:24:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:24:48,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:48,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:24:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 115 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:24:48,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383188996] [2020-10-29 07:24:48,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:48,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:24:48,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364895182] [2020-10-29 07:24:48,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:24:48,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:48,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:24:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:24:48,479 INFO L87 Difference]: Start difference. First operand 18959 states and 27010 transitions. Second operand 8 states. [2020-10-29 07:25:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:23,765 INFO L93 Difference]: Finished difference Result 49090 states and 82984 transitions. [2020-10-29 07:25:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:25:23,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-29 07:25:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:24,055 INFO L225 Difference]: With dead ends: 49090 [2020-10-29 07:25:24,056 INFO L226 Difference]: Without dead ends: 30141 [2020-10-29 07:25:24,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:25:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30141 states. [2020-10-29 07:25:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30141 to 28560. [2020-10-29 07:25:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28560 states. [2020-10-29 07:25:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28560 states to 28560 states and 39834 transitions. [2020-10-29 07:25:25,710 INFO L78 Accepts]: Start accepts. Automaton has 28560 states and 39834 transitions. Word has length 260 [2020-10-29 07:25:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:25,712 INFO L481 AbstractCegarLoop]: Abstraction has 28560 states and 39834 transitions. [2020-10-29 07:25:25,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:25:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28560 states and 39834 transitions. [2020-10-29 07:25:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 07:25:25,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:25,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:25:25,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:25:25,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:25,724 INFO L82 PathProgramCache]: Analyzing trace with hash -819639063, now seen corresponding path program 1 times [2020-10-29 07:25:25,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:25,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334880011] [2020-10-29 07:25:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-29 07:25:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:25:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3527 [2020-10-29 07:25:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-29 07:25:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 07:25:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,501 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:25:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:25:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:25:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:25:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:25:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:25:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:29,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:25:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 07:25:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:30,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:30,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:25:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 07:25:30,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:30,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:25:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:25:30,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334880011] [2020-10-29 07:25:30,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:25:30,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:25:30,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883455860] [2020-10-29 07:25:30,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:30,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:30,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:30,292 INFO L87 Difference]: Start difference. First operand 28560 states and 39834 transitions. Second operand 7 states. [2020-10-29 07:25:31,607 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:25:34,221 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66