/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:16:54,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:16:54,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:16:54,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:16:54,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:16:54,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:16:54,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:16:54,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:16:54,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:16:54,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:16:54,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:16:54,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:16:54,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:16:54,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:16:54,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:16:54,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:16:54,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:16:54,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:16:54,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:16:54,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:16:54,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:16:54,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:16:54,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:16:54,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:16:54,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:16:54,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:16:54,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:16:54,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:16:54,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:16:54,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:16:54,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:16:54,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:16:54,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:16:54,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:16:54,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:16:54,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:16:54,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:16:54,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:16:54,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:16:54,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:16:54,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:16:54,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:16:54,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:16:54,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:16:54,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:16:54,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:16:54,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:16:54,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:16:54,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:16:54,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:16:54,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:16:54,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:16:55,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:16:55,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:16:55,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:16:55,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:16:55,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:16:55,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:16:55,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:16:55,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:16:55,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:16:55,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:16:55,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:16:55,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:16:55,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:16:55,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:16:55,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:16:55,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:16:55,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:16:55,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:16:55,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:16:55,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:16:55,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:16:55,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:16:55,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:16:55,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:16:55,552 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:16:55,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2020-10-28 12:16:55,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15c0b9031/53cae5be200f4cb69189dcbb9293ae92/FLAG8b9b4c866 [2020-10-28 12:16:56,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:16:56,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2020-10-28 12:16:56,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15c0b9031/53cae5be200f4cb69189dcbb9293ae92/FLAG8b9b4c866 [2020-10-28 12:16:57,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15c0b9031/53cae5be200f4cb69189dcbb9293ae92 [2020-10-28 12:16:57,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:16:57,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:16:57,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:16:57,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:16:57,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:16:57,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57, skipping insertion in model container [2020-10-28 12:16:57,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:16:57,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:16:59,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:16:59,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:16:59,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:17:00,028 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:17:00,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00 WrapperNode [2020-10-28 12:17:00,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:17:00,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:17:00,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:17:00,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:17:00,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 12:17:00,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:17:00,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:17:00,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:17:00,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:17:00,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:17:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:17:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:17:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:17:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:17:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:17:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:17:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:17:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:17:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:17:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:17:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:17:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:17:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:17:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:17:06,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:17:06,348 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:17:06,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:06 BoogieIcfgContainer [2020-10-28 12:17:06,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:17:06,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:17:06,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:17:06,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:17:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:16:57" (1/3) ... [2020-10-28 12:17:06,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:06, skipping insertion in model container [2020-10-28 12:17:06,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (2/3) ... [2020-10-28 12:17:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:06, skipping insertion in model container [2020-10-28 12:17:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:06" (3/3) ... [2020-10-28 12:17:06,373 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label17.c [2020-10-28 12:17:06,388 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:17:06,396 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:17:06,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:17:06,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:17:06,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:17:06,471 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:17:06,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:17:06,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:17:06,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:17:06,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:17:06,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:17:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:17:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 12:17:06,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:06,536 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] [2020-10-28 12:17:06,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1119980372, now seen corresponding path program 1 times [2020-10-28 12:17:06,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:06,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625720844] [2020-10-28 12:17:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:07,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:07,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 12:17:07,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-28 12:17:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:07,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 12:17:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:07,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:07,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:07,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:17:07,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:07,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:07,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:07,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625720844] [2020-10-28 12:17:07,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:07,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:17:07,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580427032] [2020-10-28 12:17:07,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:17:07,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:17:07,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:17:07,541 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:17:07,704 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:17:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:20,196 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-28 12:17:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:20,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 12:17:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:20,233 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:17:20,234 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:17:20,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:17:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-28 12:17:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-28 12:17:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-28 12:17:20,441 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 47 [2020-10-28 12:17:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:20,442 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-28 12:17:20,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:17:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-28 12:17:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 12:17:20,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:20,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:20,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:17:20,450 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:20,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2015943667, now seen corresponding path program 1 times [2020-10-28 12:17:20,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:20,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292840959] [2020-10-28 12:17:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:17:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-28 12:17:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:21,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:17:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 12:17:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:17:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:22,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:22,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:22,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:17:22,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:22,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:22,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:22,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:17:22,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:22,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:17:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:22,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:22,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292840959] [2020-10-28 12:17:22,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:22,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:22,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80768293] [2020-10-28 12:17:22,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:22,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:22,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:22,397 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 5 states. [2020-10-28 12:17:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:36,039 INFO L93 Difference]: Finished difference Result 4675 states and 7283 transitions. [2020-10-28 12:17:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:36,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-28 12:17:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:36,061 INFO L225 Difference]: With dead ends: 4675 [2020-10-28 12:17:36,061 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:17:36,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:17:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:17:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3118. [2020-10-28 12:17:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-28 12:17:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4282 transitions. [2020-10-28 12:17:36,182 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4282 transitions. Word has length 122 [2020-10-28 12:17:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:36,183 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 4282 transitions. [2020-10-28 12:17:36,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:17:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4282 transitions. [2020-10-28 12:17:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 12:17:36,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:36,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:36,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:17:36,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:36,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1481390311, now seen corresponding path program 1 times [2020-10-28 12:17:36,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:36,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468268681] [2020-10-28 12:17:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:17:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:17:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:37,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:37,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:17:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:17:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:37,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:17:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468268681] [2020-10-28 12:17:37,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:37,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:37,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173416419] [2020-10-28 12:17:37,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:37,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:37,765 INFO L87 Difference]: Start difference. First operand 3118 states and 4282 transitions. Second operand 7 states. [2020-10-28 12:17:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:53,810 INFO L93 Difference]: Finished difference Result 9434 states and 13057 transitions. [2020-10-28 12:17:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:17:53,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-28 12:17:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:53,847 INFO L225 Difference]: With dead ends: 9434 [2020-10-28 12:17:53,847 INFO L226 Difference]: Without dead ends: 6322 [2020-10-28 12:17:53,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:17:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2020-10-28 12:17:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6276. [2020-10-28 12:17:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6276 states. [2020-10-28 12:17:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 8041 transitions. [2020-10-28 12:17:54,113 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 8041 transitions. Word has length 128 [2020-10-28 12:17:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:54,114 INFO L481 AbstractCegarLoop]: Abstraction has 6276 states and 8041 transitions. [2020-10-28 12:17:54,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 8041 transitions. [2020-10-28 12:17:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 12:17:54,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:54,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:54,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:17:54,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1954025771, now seen corresponding path program 1 times [2020-10-28 12:17:54,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:54,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45814032] [2020-10-28 12:17:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 12:17:56,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1904 [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:17:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:56,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:56,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:56,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:17:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:56,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:56,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:56,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:17:56,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 12:17:56,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:56,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:17:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:57,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45814032] [2020-10-28 12:17:57,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:57,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:17:57,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933531247] [2020-10-28 12:17:57,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:17:57,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:57,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:17:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:17:57,180 INFO L87 Difference]: Start difference. First operand 6276 states and 8041 transitions. Second operand 8 states. [2020-10-28 12:18:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:17,028 INFO L93 Difference]: Finished difference Result 17460 states and 22126 transitions. [2020-10-28 12:18:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:18:17,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-10-28 12:18:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:17,087 INFO L225 Difference]: With dead ends: 17460 [2020-10-28 12:18:17,087 INFO L226 Difference]: Without dead ends: 11190 [2020-10-28 12:18:17,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:18:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2020-10-28 12:18:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 10357. [2020-10-28 12:18:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10357 states. [2020-10-28 12:18:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 12706 transitions. [2020-10-28 12:18:17,381 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 12706 transitions. Word has length 195 [2020-10-28 12:18:17,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:17,383 INFO L481 AbstractCegarLoop]: Abstraction has 10357 states and 12706 transitions. [2020-10-28 12:18:17,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:18:17,383 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 12706 transitions. [2020-10-28 12:18:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-28 12:18:17,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:17,389 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:17,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:18:17,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash -87665444, now seen corresponding path program 1 times [2020-10-28 12:18:17,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:17,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588045854] [2020-10-28 12:18:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 12:18:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-10-28 12:18:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:18,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:18:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:18:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:19,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:19,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:18:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:18:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:18:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:19,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:19,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:18:19,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:19,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 12:18:19,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:19,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:18:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 123 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:18:19,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588045854] [2020-10-28 12:18:19,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:19,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:18:19,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960079069] [2020-10-28 12:18:19,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:18:19,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:18:19,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:18:19,867 INFO L87 Difference]: Start difference. First operand 10357 states and 12706 transitions. Second operand 8 states. [2020-10-28 12:18:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:47,186 INFO L93 Difference]: Finished difference Result 40171 states and 51637 transitions. [2020-10-28 12:18:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:18:47,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 281 [2020-10-28 12:18:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:47,296 INFO L225 Difference]: With dead ends: 40171 [2020-10-28 12:18:47,296 INFO L226 Difference]: Without dead ends: 29820 [2020-10-28 12:18:47,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:18:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29820 states. [2020-10-28 12:18:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29820 to 28986. [2020-10-28 12:18:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28986 states. [2020-10-28 12:18:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28986 states to 28986 states and 36739 transitions. [2020-10-28 12:18:48,071 INFO L78 Accepts]: Start accepts. Automaton has 28986 states and 36739 transitions. Word has length 281 [2020-10-28 12:18:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:48,072 INFO L481 AbstractCegarLoop]: Abstraction has 28986 states and 36739 transitions. [2020-10-28 12:18:48,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:18:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 28986 states and 36739 transitions. [2020-10-28 12:18:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 12:18:48,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:48,078 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:48,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:18:48,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash 589044692, now seen corresponding path program 1 times [2020-10-28 12:18:48,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:48,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074060538] [2020-10-28 12:18:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 12:18:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-28 12:18:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:50,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:18:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:18:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:50,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:51,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:18:51,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:51,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:18:51,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:51,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:18:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:18:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:18:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-28 12:18:51,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:51,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:18:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 123 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:18:51,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074060538] [2020-10-28 12:18:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:51,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:18:51,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369288132] [2020-10-28 12:18:51,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:18:51,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:18:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:51,578 INFO L87 Difference]: Start difference. First operand 28986 states and 36739 transitions. Second operand 6 states. [2020-10-28 12:19:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:09,906 INFO L93 Difference]: Finished difference Result 66968 states and 88330 transitions. [2020-10-28 12:19:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:19:09,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 285 [2020-10-28 12:19:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:10,056 INFO L225 Difference]: With dead ends: 66968 [2020-10-28 12:19:10,057 INFO L226 Difference]: Without dead ends: 37988 [2020-10-28 12:19:10,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:19:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37988 states. [2020-10-28 12:19:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37988 to 37883. [2020-10-28 12:19:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37883 states. [2020-10-28 12:19:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37883 states to 37883 states and 47970 transitions. [2020-10-28 12:19:10,932 INFO L78 Accepts]: Start accepts. Automaton has 37883 states and 47970 transitions. Word has length 285 [2020-10-28 12:19:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:10,932 INFO L481 AbstractCegarLoop]: Abstraction has 37883 states and 47970 transitions. [2020-10-28 12:19:10,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:19:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 37883 states and 47970 transitions. [2020-10-28 12:19:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-28 12:19:10,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:10,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:10,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:19:10,943 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash -249644839, now seen corresponding path program 1 times [2020-10-28 12:19:10,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:10,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648346686] [2020-10-28 12:19:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-28 12:19:16,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 12:19:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:19:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:16,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:19:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:16,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:16,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:19:16,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 12:19:16,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:16,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:19:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 12:19:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:19:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 12:19:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:17,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:19:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 294 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 12:19:17,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648346686] [2020-10-28 12:19:17,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:17,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:17,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323569648] [2020-10-28 12:19:17,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:17,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:17,310 INFO L87 Difference]: Start difference. First operand 37883 states and 47970 transitions. Second operand 7 states. [2020-10-28 12:19:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:44,122 INFO L93 Difference]: Finished difference Result 83886 states and 110099 transitions. [2020-10-28 12:19:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:19:44,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-28 12:19:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:44,270 INFO L225 Difference]: With dead ends: 83886 [2020-10-28 12:19:44,270 INFO L226 Difference]: Without dead ends: 46009 [2020-10-28 12:19:44,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:19:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46009 states. [2020-10-28 12:19:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46009 to 45146. [2020-10-28 12:19:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45146 states. [2020-10-28 12:19:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45146 states to 45146 states and 60200 transitions. [2020-10-28 12:19:45,385 INFO L78 Accepts]: Start accepts. Automaton has 45146 states and 60200 transitions. Word has length 375 [2020-10-28 12:19:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:45,386 INFO L481 AbstractCegarLoop]: Abstraction has 45146 states and 60200 transitions. [2020-10-28 12:19:45,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 45146 states and 60200 transitions. [2020-10-28 12:19:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-28 12:19:45,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:45,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:45,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:19:45,398 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1027117313, now seen corresponding path program 1 times [2020-10-28 12:19:45,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:45,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553014671] [2020-10-28 12:19:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-28 12:19:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:19:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:19:50,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:50,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-28 12:19:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:51,060 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:19:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:51,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:51,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:51,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:19:51,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:51,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:51,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:19:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:51,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:51,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:19:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:19:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:51,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:19:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 12:19:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:51,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:51,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:19:51,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:19:51,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:51,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:19:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:19:52,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553014671] [2020-10-28 12:19:52,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:52,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:52,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960498171] [2020-10-28 12:19:52,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:52,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:52,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:52,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:52,265 INFO L87 Difference]: Start difference. First operand 45146 states and 60200 transitions. Second operand 7 states. [2020-10-28 12:19:52,430 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:20:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:15,288 INFO L93 Difference]: Finished difference Result 124126 states and 174393 transitions. [2020-10-28 12:20:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:20:15,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-28 12:20:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:15,621 INFO L225 Difference]: With dead ends: 124126 [2020-10-28 12:20:15,621 INFO L226 Difference]: Without dead ends: 78986 [2020-10-28 12:20:15,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78986 states. [2020-10-28 12:20:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78986 to 75561. [2020-10-28 12:20:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75561 states. [2020-10-28 12:20:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75561 states to 75561 states and 99795 transitions. [2020-10-28 12:20:18,288 INFO L78 Accepts]: Start accepts. Automaton has 75561 states and 99795 transitions. Word has length 395 [2020-10-28 12:20:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:18,289 INFO L481 AbstractCegarLoop]: Abstraction has 75561 states and 99795 transitions. [2020-10-28 12:20:18,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 75561 states and 99795 transitions. [2020-10-28 12:20:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-28 12:20:18,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:18,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:18,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:20:18,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1881121881, now seen corresponding path program 1 times [2020-10-28 12:20:18,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067368785] [2020-10-28 12:20:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:21,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:21,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-28 12:20:21,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:20:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-10-28 12:20:21,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:21,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-28 12:20:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:20:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:21,817 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:20:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:21,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:21,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:21,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:20:21,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:21,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:20:22,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:20:22,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:20:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-28 12:20:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:22,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:20:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:20:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:22,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:20:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-28 12:20:22,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067368785] [2020-10-28 12:20:22,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:22,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:22,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061379974] [2020-10-28 12:20:22,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:22,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:22,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:22,587 INFO L87 Difference]: Start difference. First operand 75561 states and 99795 transitions. Second operand 7 states.