/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=DEEPEST --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/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:01:44,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:01:44,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:01:44,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:01:44,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:01:44,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:01:44,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:01:44,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:01:44,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:01:44,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:01:44,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:01:44,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:01:44,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:01:44,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:01:44,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:01:44,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:01:44,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:01:44,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:01:44,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:01:44,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:01:44,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:01:44,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:01:44,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:01:44,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:01:44,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:01:44,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:01:44,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:01:44,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:01:44,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:01:44,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:01:44,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:01:44,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:01:44,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:01:44,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:01:44,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:01:44,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:01:44,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:01:44,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:01:44,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:01:44,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:01:44,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:01:44,931 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 [2020-10-27 15:01:44,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:01:44,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:01:44,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:01:44,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:01:44,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:01:44,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:01:44,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:01:44,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:01:44,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:01:44,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:01:44,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:01:44,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:01:44,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:01:44,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:01:45,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:01:45,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:01:45,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:01:45,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:01:45,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:01:45,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:01:45,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:01:45,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:45,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:01:45,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:01:45,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:01:45,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:01:45,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:01:45,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:01:45,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:01:45,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:01:45,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:01:45,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:01:45,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:01:45,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:01:45,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:01:45,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-27 15:01:45,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40322c9bc/55662918f24f412d9332aa327775df05/FLAG955f8f4e5 [2020-10-27 15:01:46,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:01:46,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-27 15:01:46,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40322c9bc/55662918f24f412d9332aa327775df05/FLAG955f8f4e5 [2020-10-27 15:01:46,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40322c9bc/55662918f24f412d9332aa327775df05 [2020-10-27 15:01:46,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:01:46,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:01:46,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:46,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:01:46,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:01:46,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:46" (1/1) ... [2020-10-27 15:01:46,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fec487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:46, skipping insertion in model container [2020-10-27 15:01:46,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:46" (1/1) ... [2020-10-27 15:01:46,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:01:46,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:01:46,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:46,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:01:46,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:47,018 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:01:47,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47 WrapperNode [2020-10-27 15:01:47,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:47,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:01:47,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:01:47,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:01:47,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (1/1) ... [2020-10-27 15:01:47,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:01:47,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:01:47,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:01:47,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:01:47,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (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 [2020-10-27 15:01:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:01:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:01:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:01:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 15:01:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-27 15:01:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-27 15:01:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-27 15:01:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:01:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:01:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:01:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:01:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:01:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 15:01:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:01:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:01:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:01:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:01:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:01:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:01:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:01:47,834 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:01:47,835 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 15:01:47,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:47 BoogieIcfgContainer [2020-10-27 15:01:47,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:01:47,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:01:47,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:01:47,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:01:47,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:01:46" (1/3) ... [2020-10-27 15:01:47,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56247908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:47, skipping insertion in model container [2020-10-27 15:01:47,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:47" (2/3) ... [2020-10-27 15:01:47,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56247908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:47, skipping insertion in model container [2020-10-27 15:01:47,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:47" (3/3) ... [2020-10-27 15:01:47,845 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-27 15:01:47,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:01:47,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:01:47,874 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:01:47,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:01:47,902 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:01:47,902 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:01:47,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:01:47,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:01:47,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:01:47,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:01:47,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:01:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-27 15:01:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 15:01:47,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:47,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:47,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1471639594, now seen corresponding path program 1 times [2020-10-27 15:01:47,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:47,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572166788] [2020-10-27 15:01:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 15:01:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:01:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:01:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 15:01:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:01:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:01:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:01:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:53,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:01:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:01:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:53,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 15:01:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 15:01:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:01:53,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:01:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:01:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:01:53,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572166788] [2020-10-27 15:01:53,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:53,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:01:53,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481393946] [2020-10-27 15:01:53,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:01:53,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:53,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:01:53,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:01:53,466 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 6 states. [2020-10-27 15:01:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:54,622 INFO L93 Difference]: Finished difference Result 155 states and 240 transitions. [2020-10-27 15:01:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:01:54,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-27 15:01:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:54,637 INFO L225 Difference]: With dead ends: 155 [2020-10-27 15:01:54,637 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 15:01:54,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:01:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 15:01:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-10-27 15:01:54,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 15:01:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2020-10-27 15:01:54,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 50 [2020-10-27 15:01:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:54,706 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2020-10-27 15:01:54,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:01:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2020-10-27 15:01:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 15:01:54,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:54,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:54,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:01:54,711 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash -363916399, now seen corresponding path program 1 times [2020-10-27 15:01:54,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:54,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618799024] [2020-10-27 15:01:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:54,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 15:01:59,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 15:01:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 15:01:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:01:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 15:01:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:01:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:01:59,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:01:59,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:01:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 15:01:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:59,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 15:01:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:59,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:59,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:01:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:59,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:59,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:01:59,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:01:59,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:01:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:01:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:01:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:00,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618799024] [2020-10-27 15:02:00,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:00,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:00,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566548207] [2020-10-27 15:02:00,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:00,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:00,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:00,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:00,057 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand 9 states. [2020-10-27 15:02:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:02,686 INFO L93 Difference]: Finished difference Result 165 states and 229 transitions. [2020-10-27 15:02:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:02:02,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-27 15:02:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:02,690 INFO L225 Difference]: With dead ends: 165 [2020-10-27 15:02:02,690 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 15:02:02,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:02:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 15:02:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 89. [2020-10-27 15:02:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 15:02:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-10-27 15:02:02,714 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 55 [2020-10-27 15:02:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:02,714 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-10-27 15:02:02,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-10-27 15:02:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 15:02:02,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:02,717 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:02,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:02:02,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1463307353, now seen corresponding path program 1 times [2020-10-27 15:02:02,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:02,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144286187] [2020-10-27 15:02:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 15:02:06,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:02:06,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4256 [2020-10-27 15:02:06,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 15:02:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 15:02:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:02:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:07,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:07,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:02:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 15:02:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:02:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:02:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:02:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:07,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:07,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:02:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:02:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:07,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144286187] [2020-10-27 15:02:07,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:07,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:02:07,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272026276] [2020-10-27 15:02:07,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:02:07,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:02:07,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:02:07,216 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 7 states. [2020-10-27 15:02:08,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:08,064 INFO L93 Difference]: Finished difference Result 162 states and 220 transitions. [2020-10-27 15:02:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:02:08,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-27 15:02:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:08,066 INFO L225 Difference]: With dead ends: 162 [2020-10-27 15:02:08,067 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 15:02:08,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:02:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 15:02:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2020-10-27 15:02:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 15:02:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2020-10-27 15:02:08,102 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 56 [2020-10-27 15:02:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:08,102 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2020-10-27 15:02:08,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:02:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2020-10-27 15:02:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 15:02:08,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:08,113 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:08,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:02:08,114 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2103416020, now seen corresponding path program 1 times [2020-10-27 15:02:08,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:08,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997341804] [2020-10-27 15:02:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 15:02:13,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:02:13,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 15:02:13,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 15:02:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:02:13,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:13,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:13,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 15:02:13,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:02:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:02:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:02:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 15:02:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:13,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 15:02:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:13,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:02:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:13,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997341804] [2020-10-27 15:02:13,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:13,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:13,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806895877] [2020-10-27 15:02:13,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:13,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:13,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:13,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:13,474 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand 11 states. [2020-10-27 15:02:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:14,892 INFO L93 Difference]: Finished difference Result 193 states and 260 transitions. [2020-10-27 15:02:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:02:14,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 15:02:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:14,895 INFO L225 Difference]: With dead ends: 193 [2020-10-27 15:02:14,895 INFO L226 Difference]: Without dead ends: 123 [2020-10-27 15:02:14,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:02:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-27 15:02:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 84. [2020-10-27 15:02:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 15:02:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2020-10-27 15:02:14,932 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 57 [2020-10-27 15:02:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:14,932 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2020-10-27 15:02:14,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2020-10-27 15:02:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 15:02:14,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:14,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 15:02:14,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:02:14,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash 860985382, now seen corresponding path program 1 times [2020-10-27 15:02:14,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:14,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882954119] [2020-10-27 15:02:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:02:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-27 15:02:16,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 15:02:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:02:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:02:16,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:02:16,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:02:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 15:02:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:02:16,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 15:02:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:02:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:02:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:02:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 15:02:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882954119] [2020-10-27 15:02:16,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:16,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:16,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145995463] [2020-10-27 15:02:16,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:16,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:16,995 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand 11 states. [2020-10-27 15:02:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:20,615 INFO L93 Difference]: Finished difference Result 193 states and 262 transitions. [2020-10-27 15:02:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:02:20,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 15:02:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:20,618 INFO L225 Difference]: With dead ends: 193 [2020-10-27 15:02:20,618 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 15:02:20,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2020-10-27 15:02:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 15:02:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-27 15:02:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 15:02:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2020-10-27 15:02:20,643 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 58 [2020-10-27 15:02:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:20,643 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2020-10-27 15:02:20,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2020-10-27 15:02:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 15:02:20,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:20,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 15:02:20,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:02:20,645 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash -839095551, now seen corresponding path program 1 times [2020-10-27 15:02:20,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:20,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149003957] [2020-10-27 15:02:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3182 [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 15:02:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:02:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:23,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:02:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 15:02:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 15:02:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:24,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:02:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:24,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:24,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:24,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149003957] [2020-10-27 15:02:24,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:24,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:24,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882305360] [2020-10-27 15:02:24,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:24,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:24,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:24,137 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand 11 states. [2020-10-27 15:02:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:25,130 INFO L93 Difference]: Finished difference Result 202 states and 282 transitions. [2020-10-27 15:02:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:02:25,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-27 15:02:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:25,133 INFO L225 Difference]: With dead ends: 202 [2020-10-27 15:02:25,133 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 15:02:25,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:02:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 15:02:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-27 15:02:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 15:02:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2020-10-27 15:02:25,172 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 62 [2020-10-27 15:02:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:25,173 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2020-10-27 15:02:25,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2020-10-27 15:02:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 15:02:25,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:25,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-27 15:02:25,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:02:25,176 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash -668212531, now seen corresponding path program 1 times [2020-10-27 15:02:25,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:25,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687693452] [2020-10-27 15:02:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:27,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:27,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 15:02:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:02:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:27,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:27,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:02:28,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:02:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:02:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 15:02:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 15:02:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:02:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:28,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687693452] [2020-10-27 15:02:28,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:28,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:28,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893681276] [2020-10-27 15:02:28,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:28,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:28,170 INFO L87 Difference]: Start difference. First operand 102 states and 138 transitions. Second operand 11 states. [2020-10-27 15:02:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:29,123 INFO L93 Difference]: Finished difference Result 225 states and 311 transitions. [2020-10-27 15:02:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:02:29,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-27 15:02:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:29,127 INFO L225 Difference]: With dead ends: 225 [2020-10-27 15:02:29,127 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 15:02:29,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:02:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 15:02:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2020-10-27 15:02:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 15:02:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 146 transitions. [2020-10-27 15:02:29,149 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 146 transitions. Word has length 63 [2020-10-27 15:02:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:29,149 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 146 transitions. [2020-10-27 15:02:29,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 146 transitions. [2020-10-27 15:02:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 15:02:29,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:29,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-10-27 15:02:29,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:02:29,151 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1277752531, now seen corresponding path program 1 times [2020-10-27 15:02:29,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:29,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933471965] [2020-10-27 15:02:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 15:02:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:02:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:34,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:34,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 15:02:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:02:34,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:02:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 15:02:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:02:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 15:02:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:34,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 15:02:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:34,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:02:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 15:02:34,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933471965] [2020-10-27 15:02:34,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:34,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 15:02:34,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999322436] [2020-10-27 15:02:34,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:02:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:02:34,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:02:34,564 INFO L87 Difference]: Start difference. First operand 110 states and 146 transitions. Second operand 14 states. [2020-10-27 15:02:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:37,174 INFO L93 Difference]: Finished difference Result 266 states and 366 transitions. [2020-10-27 15:02:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 15:02:37,177 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-27 15:02:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:37,179 INFO L225 Difference]: With dead ends: 266 [2020-10-27 15:02:37,180 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 15:02:37,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 15:02:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 15:02:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 120. [2020-10-27 15:02:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 15:02:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2020-10-27 15:02:37,217 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 66 [2020-10-27 15:02:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:37,218 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2020-10-27 15:02:37,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:02:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2020-10-27 15:02:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 15:02:37,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:37,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2020-10-27 15:02:37,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:02:37,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:37,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1850458037, now seen corresponding path program 1 times [2020-10-27 15:02:37,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:37,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028822901] [2020-10-27 15:02:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 15:02:38,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:02:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:38,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 15:02:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 15:02:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:38,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:02:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:02:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:38,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028822901] [2020-10-27 15:02:38,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:38,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:02:38,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831254952] [2020-10-27 15:02:38,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:02:38,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:38,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:02:38,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:02:38,466 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand 8 states. [2020-10-27 15:02:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:39,220 INFO L93 Difference]: Finished difference Result 242 states and 318 transitions. [2020-10-27 15:02:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:02:39,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-27 15:02:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:39,223 INFO L225 Difference]: With dead ends: 242 [2020-10-27 15:02:39,223 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 15:02:39,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:02:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 15:02:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2020-10-27 15:02:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 15:02:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 159 transitions. [2020-10-27 15:02:39,258 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 159 transitions. Word has length 68 [2020-10-27 15:02:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:39,258 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 159 transitions. [2020-10-27 15:02:39,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:02:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 159 transitions. [2020-10-27 15:02:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 15:02:39,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:39,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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] [2020-10-27 15:02:39,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:02:39,266 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1627417546, now seen corresponding path program 1 times [2020-10-27 15:02:39,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:39,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161369515] [2020-10-27 15:02:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 15:02:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:40,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:40,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:40,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:40,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:40,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:40,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:02:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 15:02:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 15:02:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:41,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:41,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:41,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:41,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:02:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:41,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161369515] [2020-10-27 15:02:41,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:41,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:41,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894147147] [2020-10-27 15:02:41,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:41,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:41,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:41,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:41,035 INFO L87 Difference]: Start difference. First operand 124 states and 159 transitions. Second operand 9 states. [2020-10-27 15:02:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:44,069 INFO L93 Difference]: Finished difference Result 244 states and 322 transitions. [2020-10-27 15:02:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:02:44,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-27 15:02:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:44,074 INFO L225 Difference]: With dead ends: 244 [2020-10-27 15:02:44,074 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 15:02:44,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:02:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 15:02:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2020-10-27 15:02:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 15:02:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2020-10-27 15:02:44,109 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 70 [2020-10-27 15:02:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:44,109 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2020-10-27 15:02:44,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2020-10-27 15:02:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 15:02:44,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:44,111 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2020-10-27 15:02:44,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:02:44,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash 629807044, now seen corresponding path program 2 times [2020-10-27 15:02:44,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:44,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291008014] [2020-10-27 15:02:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 15:02:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:45,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:45,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:02:45,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:02:45,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:02:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 15:02:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:45,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 15:02:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 15:02:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:45,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291008014] [2020-10-27 15:02:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:45,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287955797] [2020-10-27 15:02:45,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:45,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:45,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:45,592 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand 9 states. [2020-10-27 15:02:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:46,642 INFO L93 Difference]: Finished difference Result 262 states and 346 transitions. [2020-10-27 15:02:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:02:46,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-27 15:02:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:46,646 INFO L225 Difference]: With dead ends: 262 [2020-10-27 15:02:46,646 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 15:02:46,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=217, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:02:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 15:02:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-10-27 15:02:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 15:02:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 168 transitions. [2020-10-27 15:02:46,673 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 168 transitions. Word has length 71 [2020-10-27 15:02:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:46,673 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 168 transitions. [2020-10-27 15:02:46,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 168 transitions. [2020-10-27 15:02:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 15:02:46,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:46,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2020-10-27 15:02:46,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:02:46,675 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:46,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2146950011, now seen corresponding path program 2 times [2020-10-27 15:02:46,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:46,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443350878] [2020-10-27 15:02:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:02:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:47,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:47,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:47,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:47,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:47,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:47,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:47,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 15:02:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 15:02:47,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:02:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:02:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:48,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:48,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 15:02:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:02:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:48,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:48,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:48,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:48,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:48,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443350878] [2020-10-27 15:02:48,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:48,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:48,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64836620] [2020-10-27 15:02:48,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:48,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:48,182 INFO L87 Difference]: Start difference. First operand 130 states and 168 transitions. Second operand 10 states. [2020-10-27 15:02:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:49,634 INFO L93 Difference]: Finished difference Result 276 states and 366 transitions. [2020-10-27 15:02:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 15:02:49,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-27 15:02:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:49,637 INFO L225 Difference]: With dead ends: 276 [2020-10-27 15:02:49,637 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 15:02:49,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:02:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 15:02:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 132. [2020-10-27 15:02:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 15:02:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2020-10-27 15:02:49,662 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 73 [2020-10-27 15:02:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:49,663 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2020-10-27 15:02:49,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2020-10-27 15:02:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 15:02:49,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:49,665 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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] [2020-10-27 15:02:49,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:02:49,665 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:49,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1704169813, now seen corresponding path program 3 times [2020-10-27 15:02:49,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:49,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438001683] [2020-10-27 15:02:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:50,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:50,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 15:02:50,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-27 15:02:50,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:50,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:50,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:50,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:02:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:51,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:51,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:51,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 15:02:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 15:02:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 15:02:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 15:02:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:51,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:51,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:51,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:51,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:02:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:51,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:51,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:51,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:51,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 15:02:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:51,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:51,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438001683] [2020-10-27 15:02:51,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:51,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:51,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253125203] [2020-10-27 15:02:51,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:51,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:51,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:51,182 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand 10 states. [2020-10-27 15:02:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:52,520 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2020-10-27 15:02:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:02:52,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-27 15:02:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:52,526 INFO L225 Difference]: With dead ends: 274 [2020-10-27 15:02:52,526 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 15:02:52,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:02:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 15:02:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2020-10-27 15:02:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 15:02:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2020-10-27 15:02:52,553 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 74 [2020-10-27 15:02:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:52,554 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2020-10-27 15:02:52,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2020-10-27 15:02:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 15:02:52,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:52,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 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] [2020-10-27 15:02:52,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:02:52,556 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash -476480042, now seen corresponding path program 3 times [2020-10-27 15:02:52,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:52,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013033576] [2020-10-27 15:02:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:02:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:53,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:02:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:02:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 15:02:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:54,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:54,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:02:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:54,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:54,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013033576] [2020-10-27 15:02:54,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:54,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:54,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807493] [2020-10-27 15:02:54,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:54,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:54,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:54,045 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand 11 states. [2020-10-27 15:02:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:55,996 INFO L93 Difference]: Finished difference Result 288 states and 382 transitions. [2020-10-27 15:02:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 15:02:55,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 15:02:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:56,001 INFO L225 Difference]: With dead ends: 288 [2020-10-27 15:02:56,001 INFO L226 Difference]: Without dead ends: 182 [2020-10-27 15:02:56,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-27 15:02:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-27 15:02:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 138. [2020-10-27 15:02:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 15:02:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2020-10-27 15:02:56,026 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 76 [2020-10-27 15:02:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:56,026 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2020-10-27 15:02:56,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2020-10-27 15:02:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 15:02:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:56,028 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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] [2020-10-27 15:02:56,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:02:56,028 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1949131300, now seen corresponding path program 4 times [2020-10-27 15:02:56,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:56,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403743984] [2020-10-27 15:02:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 15:02:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:57,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:57,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 15:02:57,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 15:02:57,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:02:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:02:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:02:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:02:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 15:02:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:02:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 15:02:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:02:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:02:57,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403743984] [2020-10-27 15:02:57,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:57,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:02:57,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119721025] [2020-10-27 15:02:57,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:02:57,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:02:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:02:57,327 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand 11 states. [2020-10-27 15:02:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:58,404 INFO L93 Difference]: Finished difference Result 290 states and 387 transitions. [2020-10-27 15:02:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:02:58,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-27 15:02:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:58,408 INFO L225 Difference]: With dead ends: 290 [2020-10-27 15:02:58,408 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 15:02:58,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2020-10-27 15:02:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 15:02:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 142. [2020-10-27 15:02:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 15:02:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 183 transitions. [2020-10-27 15:02:58,431 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 183 transitions. Word has length 77 [2020-10-27 15:02:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:58,432 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 183 transitions. [2020-10-27 15:02:58,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:02:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 183 transitions. [2020-10-27 15:02:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 15:02:58,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:58,433 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 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] [2020-10-27 15:02:58,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:02:58,433 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:58,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1291692315, now seen corresponding path program 4 times [2020-10-27 15:02:58,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:58,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865646973] [2020-10-27 15:02:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:02:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:59,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:02:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 15:02:59,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:02:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:02:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:02:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:03:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:00,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:00,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:00,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:00,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:00,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 15:03:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:03:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:00,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:03:00,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:00,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865646973] [2020-10-27 15:03:00,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:00,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 15:03:00,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224420633] [2020-10-27 15:03:00,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:03:00,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:03:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:03:00,165 INFO L87 Difference]: Start difference. First operand 142 states and 183 transitions. Second operand 12 states. [2020-10-27 15:03:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:02,116 INFO L93 Difference]: Finished difference Result 301 states and 400 transitions. [2020-10-27 15:03:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 15:03:02,117 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-27 15:03:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:02,119 INFO L225 Difference]: With dead ends: 301 [2020-10-27 15:03:02,119 INFO L226 Difference]: Without dead ends: 192 [2020-10-27 15:03:02,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-27 15:03:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-27 15:03:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 144. [2020-10-27 15:03:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 15:03:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2020-10-27 15:03:02,142 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 79 [2020-10-27 15:03:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:02,142 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2020-10-27 15:03:02,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:03:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2020-10-27 15:03:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 15:03:02,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:02,144 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 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] [2020-10-27 15:03:02,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:03:02,144 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1847612683, now seen corresponding path program 5 times [2020-10-27 15:03:02,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:02,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084849182] [2020-10-27 15:03:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:02,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:03:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:03,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 15:03:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:03:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:03:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 15:03:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:03,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084849182] [2020-10-27 15:03:03,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:03,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 15:03:03,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699734261] [2020-10-27 15:03:03,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:03:03,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:03:03,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:03:03,545 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand 12 states. [2020-10-27 15:03:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:04,968 INFO L93 Difference]: Finished difference Result 297 states and 400 transitions. [2020-10-27 15:03:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:03:04,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-27 15:03:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:04,975 INFO L225 Difference]: With dead ends: 297 [2020-10-27 15:03:04,975 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 15:03:04,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:03:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 15:03:04,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 148. [2020-10-27 15:03:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 15:03:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2020-10-27 15:03:05,001 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 80 [2020-10-27 15:03:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:05,001 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2020-10-27 15:03:05,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:03:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2020-10-27 15:03:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 15:03:05,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:05,003 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 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] [2020-10-27 15:03:05,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:03:05,003 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:05,004 INFO L82 PathProgramCache]: Analyzing trace with hash 759541622, now seen corresponding path program 5 times [2020-10-27 15:03:05,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:05,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921229013] [2020-10-27 15:03:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:05,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:03:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:03:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 15:03:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:06,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 15:03:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:03:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:06,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:06,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:06,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:06,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:06,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921229013] [2020-10-27 15:03:06,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:06,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:03:06,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676330643] [2020-10-27 15:03:06,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:03:06,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:06,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:03:06,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:03:06,856 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand 13 states. [2020-10-27 15:03:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:09,297 INFO L93 Difference]: Finished difference Result 314 states and 418 transitions. [2020-10-27 15:03:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 15:03:09,297 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-27 15:03:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:09,299 INFO L225 Difference]: With dead ends: 314 [2020-10-27 15:03:09,299 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 15:03:09,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:03:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 15:03:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 150. [2020-10-27 15:03:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-27 15:03:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2020-10-27 15:03:09,332 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 82 [2020-10-27 15:03:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:09,333 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2020-10-27 15:03:09,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:03:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2020-10-27 15:03:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 15:03:09,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:09,336 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2020-10-27 15:03:09,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 15:03:09,336 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1611097220, now seen corresponding path program 6 times [2020-10-27 15:03:09,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:09,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811907710] [2020-10-27 15:03:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 15:03:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 15:03:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:03:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 15:03:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 15:03:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:10,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:03:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 15:03:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 4 proven. 109 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:10,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811907710] [2020-10-27 15:03:10,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:10,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:03:10,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406287677] [2020-10-27 15:03:10,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:03:10,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:03:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:03:10,851 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand 13 states. [2020-10-27 15:03:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:12,623 INFO L93 Difference]: Finished difference Result 322 states and 433 transitions. [2020-10-27 15:03:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 15:03:12,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-27 15:03:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:12,626 INFO L225 Difference]: With dead ends: 322 [2020-10-27 15:03:12,626 INFO L226 Difference]: Without dead ends: 210 [2020-10-27 15:03:12,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=329, Invalid=601, Unknown=0, NotChecked=0, Total=930 [2020-10-27 15:03:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-27 15:03:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 154. [2020-10-27 15:03:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 15:03:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2020-10-27 15:03:12,654 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 83 [2020-10-27 15:03:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:12,654 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2020-10-27 15:03:12,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:03:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2020-10-27 15:03:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 15:03:12,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:12,656 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 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] [2020-10-27 15:03:12,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 15:03:12,656 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:12,656 INFO L82 PathProgramCache]: Analyzing trace with hash 275071301, now seen corresponding path program 6 times [2020-10-27 15:03:12,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:12,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927556871] [2020-10-27 15:03:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1513 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 15:03:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:03:14,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 15:03:14,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:03:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 15:03:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:03:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:14,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 15:03:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:03:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:14,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927556871] [2020-10-27 15:03:14,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:14,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 15:03:14,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510587469] [2020-10-27 15:03:14,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:03:14,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:14,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:03:14,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:03:14,625 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand 14 states. [2020-10-27 15:03:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:17,711 INFO L93 Difference]: Finished difference Result 327 states and 436 transitions. [2020-10-27 15:03:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 15:03:17,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-27 15:03:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:17,715 INFO L225 Difference]: With dead ends: 327 [2020-10-27 15:03:17,715 INFO L226 Difference]: Without dead ends: 212 [2020-10-27 15:03:17,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 15:03:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-27 15:03:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 156. [2020-10-27 15:03:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 15:03:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2020-10-27 15:03:17,742 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 85 [2020-10-27 15:03:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:17,742 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2020-10-27 15:03:17,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:03:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2020-10-27 15:03:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 15:03:17,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:17,744 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 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] [2020-10-27 15:03:17,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 15:03:17,744 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash -522580843, now seen corresponding path program 7 times [2020-10-27 15:03:17,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:17,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506955085] [2020-10-27 15:03:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 15:03:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 15:03:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 15:03:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:03:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:03:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:19,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506955085] [2020-10-27 15:03:19,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:19,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 15:03:19,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329942354] [2020-10-27 15:03:19,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:03:19,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:19,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:03:19,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:03:19,482 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand 14 states. [2020-10-27 15:03:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:20,884 INFO L93 Difference]: Finished difference Result 323 states and 438 transitions. [2020-10-27 15:03:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:03:20,886 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 15:03:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:20,889 INFO L225 Difference]: With dead ends: 323 [2020-10-27 15:03:20,889 INFO L226 Difference]: Without dead ends: 208 [2020-10-27 15:03:20,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=394, Unknown=0, NotChecked=0, Total=650 [2020-10-27 15:03:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-27 15:03:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 160. [2020-10-27 15:03:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 15:03:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 207 transitions. [2020-10-27 15:03:20,922 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 207 transitions. Word has length 86 [2020-10-27 15:03:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 207 transitions. [2020-10-27 15:03:20,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:03:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 207 transitions. [2020-10-27 15:03:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 15:03:20,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:20,923 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 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] [2020-10-27 15:03:20,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 15:03:20,924 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:20,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1490147050, now seen corresponding path program 7 times [2020-10-27 15:03:20,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:20,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161852688] [2020-10-27 15:03:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:03:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:22,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:03:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 15:03:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:03:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 15:03:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:23,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161852688] [2020-10-27 15:03:23,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:23,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 15:03:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507542445] [2020-10-27 15:03:23,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 15:03:23,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 15:03:23,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:03:23,180 INFO L87 Difference]: Start difference. First operand 160 states and 207 transitions. Second operand 15 states. [2020-10-27 15:03:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:26,441 INFO L93 Difference]: Finished difference Result 340 states and 454 transitions. [2020-10-27 15:03:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 15:03:26,442 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-27 15:03:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:26,444 INFO L225 Difference]: With dead ends: 340 [2020-10-27 15:03:26,444 INFO L226 Difference]: Without dead ends: 222 [2020-10-27 15:03:26,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 15:03:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-27 15:03:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 162. [2020-10-27 15:03:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-27 15:03:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 210 transitions. [2020-10-27 15:03:26,472 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 210 transitions. Word has length 88 [2020-10-27 15:03:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:26,473 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 210 transitions. [2020-10-27 15:03:26,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 15:03:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 210 transitions. [2020-10-27 15:03:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 15:03:26,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:26,474 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 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] [2020-10-27 15:03:26,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 15:03:26,475 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:26,475 INFO L82 PathProgramCache]: Analyzing trace with hash 590225124, now seen corresponding path program 8 times [2020-10-27 15:03:26,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:26,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203496535] [2020-10-27 15:03:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 15:03:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:03:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:03:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:03:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 15:03:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:28,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203496535] [2020-10-27 15:03:28,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:28,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 15:03:28,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411858580] [2020-10-27 15:03:28,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 15:03:28,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:28,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 15:03:28,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=118, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:03:28,528 INFO L87 Difference]: Start difference. First operand 162 states and 210 transitions. Second operand 15 states. [2020-10-27 15:03:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:30,075 INFO L93 Difference]: Finished difference Result 336 states and 457 transitions. [2020-10-27 15:03:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 15:03:30,077 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-27 15:03:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:30,078 INFO L225 Difference]: With dead ends: 336 [2020-10-27 15:03:30,078 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 15:03:30,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=459, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:03:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 15:03:30,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 166. [2020-10-27 15:03:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-27 15:03:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2020-10-27 15:03:30,108 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 89 [2020-10-27 15:03:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:30,108 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2020-10-27 15:03:30,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 15:03:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2020-10-27 15:03:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 15:03:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:30,110 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 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] [2020-10-27 15:03:30,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 15:03:30,110 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1530469467, now seen corresponding path program 8 times [2020-10-27 15:03:30,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:30,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977178028] [2020-10-27 15:03:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 15:03:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 15:03:32,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 15:03:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:03:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 15:03:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:03:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 15:03:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 15:03:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:32,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 174 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977178028] [2020-10-27 15:03:32,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:32,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 15:03:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513314609] [2020-10-27 15:03:32,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 15:03:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 15:03:32,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:03:32,727 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand 16 states. [2020-10-27 15:03:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:35,048 INFO L93 Difference]: Finished difference Result 328 states and 441 transitions. [2020-10-27 15:03:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:03:35,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-27 15:03:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:35,052 INFO L225 Difference]: With dead ends: 328 [2020-10-27 15:03:35,052 INFO L226 Difference]: Without dead ends: 213 [2020-10-27 15:03:35,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2020-10-27 15:03:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-27 15:03:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 167. [2020-10-27 15:03:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-27 15:03:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2020-10-27 15:03:35,084 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 91 [2020-10-27 15:03:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:35,084 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2020-10-27 15:03:35,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 15:03:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2020-10-27 15:03:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 15:03:35,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:35,086 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 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] [2020-10-27 15:03:35,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 15:03:35,086 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:35,087 INFO L82 PathProgramCache]: Analyzing trace with hash -659769803, now seen corresponding path program 9 times [2020-10-27 15:03:35,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:35,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302394985] [2020-10-27 15:03:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:03:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 15:03:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 15:03:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:03:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 15:03:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:37,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302394985] [2020-10-27 15:03:37,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:37,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 15:03:37,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114307998] [2020-10-27 15:03:37,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 15:03:37,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 15:03:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=134, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:03:37,623 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand 16 states. [2020-10-27 15:03:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:39,048 INFO L93 Difference]: Finished difference Result 353 states and 481 transitions. [2020-10-27 15:03:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:03:39,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-27 15:03:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:39,052 INFO L225 Difference]: With dead ends: 353 [2020-10-27 15:03:39,052 INFO L226 Difference]: Without dead ends: 232 [2020-10-27 15:03:39,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=341, Invalid=529, Unknown=0, NotChecked=0, Total=870 [2020-10-27 15:03:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-27 15:03:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 172. [2020-10-27 15:03:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-27 15:03:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2020-10-27 15:03:39,084 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 92 [2020-10-27 15:03:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:39,085 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2020-10-27 15:03:39,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 15:03:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2020-10-27 15:03:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 15:03:39,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:39,087 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 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] [2020-10-27 15:03:39,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 15:03:39,087 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:39,087 INFO L82 PathProgramCache]: Analyzing trace with hash -184751434, now seen corresponding path program 9 times [2020-10-27 15:03:39,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:39,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32074216] [2020-10-27 15:03:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 15:03:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2383 [2020-10-27 15:03:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:03:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 15:03:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:41,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:41,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:41,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:41,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:41,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:41,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 15:03:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:03:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:03:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:42,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:42,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:03:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:42,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32074216] [2020-10-27 15:03:42,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:42,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:03:42,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596170190] [2020-10-27 15:03:42,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:03:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:03:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:03:42,119 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand 17 states. [2020-10-27 15:03:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:44,536 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2020-10-27 15:03:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 15:03:44,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-10-27 15:03:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:44,540 INFO L225 Difference]: With dead ends: 340 [2020-10-27 15:03:44,540 INFO L226 Difference]: Without dead ends: 222 [2020-10-27 15:03:44,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:03:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-27 15:03:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 173. [2020-10-27 15:03:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 15:03:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2020-10-27 15:03:44,572 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 94 [2020-10-27 15:03:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:44,573 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2020-10-27 15:03:44,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:03:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2020-10-27 15:03:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 15:03:44,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:44,574 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 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] [2020-10-27 15:03:44,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 15:03:44,575 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1892183740, now seen corresponding path program 10 times [2020-10-27 15:03:44,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:44,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586001333] [2020-10-27 15:03:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1753 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 15:03:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:46,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:46,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:46,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 15:03:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 15:03:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:03:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 15:03:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:46,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:46,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:46,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 4 proven. 231 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:46,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586001333] [2020-10-27 15:03:46,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:46,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:03:46,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144114921] [2020-10-27 15:03:46,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:03:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:46,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:03:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:03:46,859 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand 17 states. [2020-10-27 15:03:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:49,550 INFO L93 Difference]: Finished difference Result 394 states and 535 transitions. [2020-10-27 15:03:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 15:03:49,556 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-27 15:03:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:49,558 INFO L225 Difference]: With dead ends: 394 [2020-10-27 15:03:49,558 INFO L226 Difference]: Without dead ends: 270 [2020-10-27 15:03:49,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=629, Invalid=1177, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 15:03:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-27 15:03:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 178. [2020-10-27 15:03:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 15:03:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2020-10-27 15:03:49,595 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 95 [2020-10-27 15:03:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:49,595 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2020-10-27 15:03:49,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:03:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2020-10-27 15:03:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 15:03:49,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:49,596 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 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] [2020-10-27 15:03:49,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 15:03:49,597 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:49,597 INFO L82 PathProgramCache]: Analyzing trace with hash 876428805, now seen corresponding path program 10 times [2020-10-27 15:03:49,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:49,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312785053] [2020-10-27 15:03:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 15:03:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 15:03:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 15:03:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:03:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 15:03:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:03:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:03:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:03:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 15:03:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 15:03:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:52,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 243 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:03:53,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312785053] [2020-10-27 15:03:53,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:03:53,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 15:03:53,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93875938] [2020-10-27 15:03:53,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 15:03:53,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:03:53,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 15:03:53,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:03:53,002 INFO L87 Difference]: Start difference. First operand 178 states and 233 transitions. Second operand 18 states. [2020-10-27 15:03:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:03:57,337 INFO L93 Difference]: Finished difference Result 381 states and 512 transitions. [2020-10-27 15:03:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 15:03:57,337 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-27 15:03:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:03:57,339 INFO L225 Difference]: With dead ends: 381 [2020-10-27 15:03:57,339 INFO L226 Difference]: Without dead ends: 252 [2020-10-27 15:03:57,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=269, Invalid=1893, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 15:03:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-27 15:03:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 180. [2020-10-27 15:03:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-27 15:03:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 234 transitions. [2020-10-27 15:03:57,376 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 234 transitions. Word has length 97 [2020-10-27 15:03:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:03:57,376 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 234 transitions. [2020-10-27 15:03:57,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 15:03:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 234 transitions. [2020-10-27 15:03:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 15:03:57,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:03:57,378 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 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] [2020-10-27 15:03:57,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 15:03:57,378 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:03:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:03:57,379 INFO L82 PathProgramCache]: Analyzing trace with hash 939632597, now seen corresponding path program 11 times [2020-10-27 15:03:57,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:03:57,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441492871] [2020-10-27 15:03:57,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:03:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:59,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:59,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 15:03:59,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 15:03:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:03:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:03:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:59,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:03:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:03:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:03:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:03:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:03:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:03:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:03:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 15:03:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 15:03:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 15:04:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 15:04:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:00,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:00,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:04:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 269 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:00,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441492871] [2020-10-27 15:04:00,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:00,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 15:04:00,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497701001] [2020-10-27 15:04:00,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 15:04:00,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 15:04:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:04:00,152 INFO L87 Difference]: Start difference. First operand 180 states and 234 transitions. Second operand 18 states. [2020-10-27 15:04:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:04,832 INFO L93 Difference]: Finished difference Result 402 states and 548 transitions. [2020-10-27 15:04:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 15:04:04,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-27 15:04:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:04,836 INFO L225 Difference]: With dead ends: 402 [2020-10-27 15:04:04,836 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 15:04:04,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=719, Invalid=1351, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 15:04:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 15:04:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 184. [2020-10-27 15:04:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 15:04:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 239 transitions. [2020-10-27 15:04:04,876 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 239 transitions. Word has length 98 [2020-10-27 15:04:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:04,876 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 239 transitions. [2020-10-27 15:04:04,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 15:04:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 239 transitions. [2020-10-27 15:04:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 15:04:04,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:04,878 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 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] [2020-10-27 15:04:04,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 15:04:04,878 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:04,878 INFO L82 PathProgramCache]: Analyzing trace with hash -757337002, now seen corresponding path program 11 times [2020-10-27 15:04:04,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:04,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739095620] [2020-10-27 15:04:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2834 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 15:04:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:07,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:07,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:07,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:07,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 15:04:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:04:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:08,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 15:04:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:08,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:08,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:08,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:08,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 15:04:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:08,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:08,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:08,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739095620] [2020-10-27 15:04:08,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:08,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:04:08,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508464974] [2020-10-27 15:04:08,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:04:08,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:08,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:04:08,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:04:08,560 INFO L87 Difference]: Start difference. First operand 184 states and 239 transitions. Second operand 19 states. [2020-10-27 15:04:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:14,058 INFO L93 Difference]: Finished difference Result 392 states and 526 transitions. [2020-10-27 15:04:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 15:04:14,059 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-27 15:04:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:14,061 INFO L225 Difference]: With dead ends: 392 [2020-10-27 15:04:14,061 INFO L226 Difference]: Without dead ends: 262 [2020-10-27 15:04:14,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=288, Invalid=2162, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 15:04:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-27 15:04:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 186. [2020-10-27 15:04:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-27 15:04:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2020-10-27 15:04:14,099 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 100 [2020-10-27 15:04:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:14,099 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2020-10-27 15:04:14,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:04:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2020-10-27 15:04:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 15:04:14,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:14,101 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 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] [2020-10-27 15:04:14,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 15:04:14,101 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1832500132, now seen corresponding path program 12 times [2020-10-27 15:04:14,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:14,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632640709] [2020-10-27 15:04:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:16,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:16,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 15:04:16,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:16,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:16,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 15:04:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 15:04:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:17,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:17,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 15:04:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 15:04:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 4 proven. 310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:17,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632640709] [2020-10-27 15:04:17,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:17,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:04:17,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064457224] [2020-10-27 15:04:17,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:04:17,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:04:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:04:17,267 INFO L87 Difference]: Start difference. First operand 186 states and 242 transitions. Second operand 19 states. [2020-10-27 15:04:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:20,310 INFO L93 Difference]: Finished difference Result 418 states and 571 transitions. [2020-10-27 15:04:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 15:04:20,311 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-27 15:04:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:20,314 INFO L225 Difference]: With dead ends: 418 [2020-10-27 15:04:20,314 INFO L226 Difference]: Without dead ends: 288 [2020-10-27 15:04:20,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=815, Invalid=1537, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 15:04:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-27 15:04:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 190. [2020-10-27 15:04:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-27 15:04:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2020-10-27 15:04:20,356 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 101 [2020-10-27 15:04:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:20,356 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2020-10-27 15:04:20,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:04:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2020-10-27 15:04:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 15:04:20,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:20,358 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 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] [2020-10-27 15:04:20,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 15:04:20,358 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1705095067, now seen corresponding path program 12 times [2020-10-27 15:04:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:20,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818861010] [2020-10-27 15:04:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3966 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 15:04:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:04:24,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:24,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 15:04:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:04:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:25,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:25,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:25,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:25,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:25,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:04:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:25,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 15:04:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818861010] [2020-10-27 15:04:25,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:25,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 15:04:25,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599629536] [2020-10-27 15:04:25,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 15:04:25,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 15:04:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:04:25,200 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand 20 states. [2020-10-27 15:04:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:32,132 INFO L93 Difference]: Finished difference Result 405 states and 544 transitions. [2020-10-27 15:04:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 15:04:32,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-27 15:04:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:32,135 INFO L225 Difference]: With dead ends: 405 [2020-10-27 15:04:32,135 INFO L226 Difference]: Without dead ends: 272 [2020-10-27 15:04:32,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=307, Invalid=2449, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 15:04:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-27 15:04:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 192. [2020-10-27 15:04:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-27 15:04:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 250 transitions. [2020-10-27 15:04:32,176 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 250 transitions. Word has length 103 [2020-10-27 15:04:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:32,177 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 250 transitions. [2020-10-27 15:04:32,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 15:04:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 250 transitions. [2020-10-27 15:04:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 15:04:32,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:32,178 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 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] [2020-10-27 15:04:32,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 15:04:32,179 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1778196107, now seen corresponding path program 13 times [2020-10-27 15:04:32,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:32,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308173964] [2020-10-27 15:04:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:34,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:34,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:04:34,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-27 15:04:34,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:04:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 15:04:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:34,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 15:04:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 15:04:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:35,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 15:04:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 15:04:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:35,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 4 proven. 354 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:35,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308173964] [2020-10-27 15:04:35,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:35,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 15:04:35,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609137196] [2020-10-27 15:04:35,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 15:04:35,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:35,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 15:04:35,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=208, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:04:35,191 INFO L87 Difference]: Start difference. First operand 192 states and 250 transitions. Second operand 20 states. [2020-10-27 15:04:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:37,750 INFO L93 Difference]: Finished difference Result 401 states and 552 transitions. [2020-10-27 15:04:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 15:04:37,752 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-27 15:04:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:37,754 INFO L225 Difference]: With dead ends: 401 [2020-10-27 15:04:37,754 INFO L226 Difference]: Without dead ends: 268 [2020-10-27 15:04:37,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=547, Invalid=859, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 15:04:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-27 15:04:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2020-10-27 15:04:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-27 15:04:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 255 transitions. [2020-10-27 15:04:37,796 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 255 transitions. Word has length 104 [2020-10-27 15:04:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 255 transitions. [2020-10-27 15:04:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 15:04:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 255 transitions. [2020-10-27 15:04:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 15:04:37,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:37,798 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 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] [2020-10-27 15:04:37,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 15:04:37,799 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:37,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1250605578, now seen corresponding path program 13 times [2020-10-27 15:04:37,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:37,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020382575] [2020-10-27 15:04:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:41,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:41,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 15:04:41,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:41,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3740 [2020-10-27 15:04:41,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:41,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 15:04:41,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:41,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:04:41,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:41,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:41,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:41,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 15:04:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:04:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:42,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 15:04:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 15:04:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:42,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020382575] [2020-10-27 15:04:42,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:42,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 15:04:42,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677138671] [2020-10-27 15:04:42,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 15:04:42,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 15:04:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:04:42,560 INFO L87 Difference]: Start difference. First operand 196 states and 255 transitions. Second operand 21 states. [2020-10-27 15:04:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:50,134 INFO L93 Difference]: Finished difference Result 418 states and 562 transitions. [2020-10-27 15:04:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 15:04:50,135 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-27 15:04:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:50,137 INFO L225 Difference]: With dead ends: 418 [2020-10-27 15:04:50,137 INFO L226 Difference]: Without dead ends: 282 [2020-10-27 15:04:50,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=326, Invalid=2754, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 15:04:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-27 15:04:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 198. [2020-10-27 15:04:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-27 15:04:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 258 transitions. [2020-10-27 15:04:50,179 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 258 transitions. Word has length 106 [2020-10-27 15:04:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:50,180 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 258 transitions. [2020-10-27 15:04:50,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 15:04:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 258 transitions. [2020-10-27 15:04:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 15:04:50,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:50,181 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 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] [2020-10-27 15:04:50,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 15:04:50,181 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash -573923836, now seen corresponding path program 14 times [2020-10-27 15:04:50,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:50,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260731346] [2020-10-27 15:04:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 15:04:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:04:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2769 [2020-10-27 15:04:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 15:04:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:04:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 15:04:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:04:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:04:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:04:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:04:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:04:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:04:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:04:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 15:04:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 15:04:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:04:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 15:04:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:04:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:04:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 4 proven. 401 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:04:53,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260731346] [2020-10-27 15:04:53,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:04:53,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 15:04:53,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676579116] [2020-10-27 15:04:53,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 15:04:53,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:04:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 15:04:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:04:53,807 INFO L87 Difference]: Start difference. First operand 198 states and 258 transitions. Second operand 21 states. [2020-10-27 15:04:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:04:58,089 INFO L93 Difference]: Finished difference Result 450 states and 617 transitions. [2020-10-27 15:04:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 15:04:58,091 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-27 15:04:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:04:58,093 INFO L225 Difference]: With dead ends: 450 [2020-10-27 15:04:58,093 INFO L226 Difference]: Without dead ends: 314 [2020-10-27 15:04:58,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1025, Invalid=1945, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 15:04:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-27 15:04:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 202. [2020-10-27 15:04:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-27 15:04:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 263 transitions. [2020-10-27 15:04:58,140 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 263 transitions. Word has length 107 [2020-10-27 15:04:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:04:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 263 transitions. [2020-10-27 15:04:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 15:04:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 263 transitions. [2020-10-27 15:04:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 15:04:58,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:04:58,142 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 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] [2020-10-27 15:04:58,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 15:04:58,142 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:04:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:04:58,143 INFO L82 PathProgramCache]: Analyzing trace with hash 708844229, now seen corresponding path program 14 times [2020-10-27 15:04:58,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:04:58,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140251453] [2020-10-27 15:04:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:04:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:04:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:04:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3988 [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:05:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:05:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 15:05:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:05:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:02,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:05:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:05:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:05:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:05:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 15:05:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 15:05:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:05:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:05:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:05:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 15:05:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:03,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:05:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:03,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:05:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:03,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 15:05:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:03,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:03,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:03,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:05:03,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:05:03,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140251453] [2020-10-27 15:05:03,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:05:03,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 15:05:03,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753333651] [2020-10-27 15:05:03,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 15:05:03,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:05:03,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 15:05:03,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:05:03,527 INFO L87 Difference]: Start difference. First operand 202 states and 263 transitions. Second operand 22 states. [2020-10-27 15:05:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:05:11,841 INFO L93 Difference]: Finished difference Result 431 states and 580 transitions. [2020-10-27 15:05:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 15:05:11,842 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 15:05:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:05:11,844 INFO L225 Difference]: With dead ends: 431 [2020-10-27 15:05:11,844 INFO L226 Difference]: Without dead ends: 292 [2020-10-27 15:05:11,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=345, Invalid=3077, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 15:05:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-27 15:05:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 204. [2020-10-27 15:05:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 15:05:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2020-10-27 15:05:11,891 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 109 [2020-10-27 15:05:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:05:11,891 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2020-10-27 15:05:11,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 15:05:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2020-10-27 15:05:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 15:05:11,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:05:11,893 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 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] [2020-10-27 15:05:11,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 15:05:11,893 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:05:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:05:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash 39478037, now seen corresponding path program 15 times [2020-10-27 15:05:11,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:05:11,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114236289] [2020-10-27 15:05:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:05:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3375 [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:05:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:05:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:05:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:05:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:05:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:05:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:15,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:05:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 15:05:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 15:05:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:05:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:05:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:05:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 15:05:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:16,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:16,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:05:16,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:16,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 15:05:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:05:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:05:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:05:16,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:05:16,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:05:16,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:05:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:05:16,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:05:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:05:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 15:05:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:05:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:05:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 4 proven. 451 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:05:16,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114236289] [2020-10-27 15:05:16,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:05:16,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 15:05:16,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781598576] [2020-10-27 15:05:16,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 15:05:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:05:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 15:05:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:05:16,293 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand 22 states.