/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:51:44,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:51:44,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:51:44,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:51:44,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:51:44,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:51:44,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:51:44,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:51:45,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:51:45,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:51:45,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:51:45,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:51:45,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:51:45,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:51:45,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:51:45,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:51:45,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:51:45,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:51:45,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:51:45,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:51:45,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:51:45,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:51:45,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:51:45,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:51:45,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:51:45,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:51:45,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:51:45,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:51:45,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:51:45,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:51:45,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:51:45,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:51:45,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:51:45,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:51:45,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:51:45,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:51:45,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:51:45,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:51:45,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:51:45,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:51:45,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:51:45,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:51:45,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:51:45,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:51:45,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:51:45,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:51:45,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:51:45,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:51:45,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:51:45,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:51:45,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:51:45,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:51:45,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:51:45,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:51:45,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:51:45,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:51:45,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:51:45,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:51:45,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:51:45,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:51:45,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:51:45,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:51:45,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:51:45,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:51:45,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:51:45,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:51:45,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:51:45,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:51:45,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:51:45,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:51:45,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:51:45,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:51:45,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:51:45,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:51:45,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:51:45,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:51:45,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:51:45,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2020-10-28 14:51:45,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2430dcb85/c840d0f304794311ab76c20515866699/FLAG88bcefe1f [2020-10-28 14:51:46,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:51:46,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2020-10-28 14:51:46,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2430dcb85/c840d0f304794311ab76c20515866699/FLAG88bcefe1f [2020-10-28 14:51:46,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2430dcb85/c840d0f304794311ab76c20515866699 [2020-10-28 14:51:46,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:51:46,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:51:46,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:51:46,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:51:46,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:51:46,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:51:46" (1/1) ... [2020-10-28 14:51:46,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:46, skipping insertion in model container [2020-10-28 14:51:46,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:51:46" (1/1) ... [2020-10-28 14:51:46,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:51:46,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:51:47,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:51:47,212 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:51:47,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:51:47,369 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:51:47,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47 WrapperNode [2020-10-28 14:51:47,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:51:47,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:51:47,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:51:47,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:51:47,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (1/1) ... [2020-10-28 14:51:47,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:51:47,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:51:47,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:51:47,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:51:47,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (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 [2020-10-28 14:51:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:51:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:51:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:51:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2020-10-28 14:51:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:51:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:51:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:51:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:51:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:51:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:51:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:51:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:51:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:51:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:51:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:51:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:51:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:51:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:51:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:51:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:51:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:51:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:51:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:51:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:51:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2020-10-28 14:51:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:51:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:51:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:51:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:51:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:51:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:51:48,010 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:51:48,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:51:48,211 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:51:48,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:51:48 BoogieIcfgContainer [2020-10-28 14:51:48,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:51:48,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:51:48,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:51:48,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:51:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:51:46" (1/3) ... [2020-10-28 14:51:48,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9946d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:51:48, skipping insertion in model container [2020-10-28 14:51:48,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:47" (2/3) ... [2020-10-28 14:51:48,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9946d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:51:48, skipping insertion in model container [2020-10-28 14:51:48,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:51:48" (3/3) ... [2020-10-28 14:51:48,223 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2020-10-28 14:51:48,236 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:51:48,242 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:51:48,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:51:48,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:51:48,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:51:48,289 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:51:48,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:51:48,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:51:48,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:51:48,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:51:48,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:51:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-28 14:51:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:51:48,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:48,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:48,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1332459150, now seen corresponding path program 1 times [2020-10-28 14:51:48,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:48,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517857001] [2020-10-28 14:51:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:50,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:50,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:51:50,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-28 14:51:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:50,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:51:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:51:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:50,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:50,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:50,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:51:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:50,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:51:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:50,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:51:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:51:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:51:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:51:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:50,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:51:50,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517857001] [2020-10-28 14:51:50,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:50,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:51:50,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514922703] [2020-10-28 14:51:50,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:51:50,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:51:50,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:51:50,775 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 7 states. [2020-10-28 14:51:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:51,149 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2020-10-28 14:51:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:51:51,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-28 14:51:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:51,161 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:51:51,161 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 14:51:51,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:51:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 14:51:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-28 14:51:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 14:51:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 14:51:51,214 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 29 [2020-10-28 14:51:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:51,215 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 14:51:51,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:51:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 14:51:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:51:51,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:51,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:51,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:51:51,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:51,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1169543150, now seen corresponding path program 1 times [2020-10-28 14:51:51,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:51,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570923364] [2020-10-28 14:51:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 14:51:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-28 14:51:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:51:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:53,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:51:53,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:53,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 14:51:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:53,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:51:53,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:51:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:51:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:51:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:51:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:51:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:51:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:53,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570923364] [2020-10-28 14:51:53,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:53,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:51:53,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947121742] [2020-10-28 14:51:53,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:51:53,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:53,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:51:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:51:53,709 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 8 states. [2020-10-28 14:51:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:54,023 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-28 14:51:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:51:54,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-28 14:51:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:54,028 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:51:54,028 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:51:54,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:51:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:51:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-28 14:51:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:51:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-28 14:51:54,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 38 [2020-10-28 14:51:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:54,050 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-28 14:51:54,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:51:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-28 14:51:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:51:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:54,052 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:54,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:51:54,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1434594062, now seen corresponding path program 2 times [2020-10-28 14:51:54,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:54,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459802854] [2020-10-28 14:51:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:51:54,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-28 14:51:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 14:51:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:51:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:51:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:54,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:51:54,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 14:51:54,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:54,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:51:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:51:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:51:55,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:55,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:55,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459802854] [2020-10-28 14:51:55,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:55,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 14:51:55,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004227578] [2020-10-28 14:51:55,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:51:55,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:51:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:51:55,064 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 12 states. [2020-10-28 14:51:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:55,499 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-28 14:51:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:51:55,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-28 14:51:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:55,502 INFO L225 Difference]: With dead ends: 45 [2020-10-28 14:51:55,502 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:51:55,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:51:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:51:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 14:51:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:51:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 14:51:55,512 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 47 [2020-10-28 14:51:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:55,512 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 14:51:55,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:51:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 14:51:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:51:55,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:55,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:55,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:51:55,515 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:55,516 INFO L82 PathProgramCache]: Analyzing trace with hash -16651937, now seen corresponding path program 1 times [2020-10-28 14:51:55,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:55,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555302708] [2020-10-28 14:51:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:00,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:00,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:52:00,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:00,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:52:00,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:00,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:52:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 14:52:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:52:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:00,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:00,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:00,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:52:00,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:00,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 14:52:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:01,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:52:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:01,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:52:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:01,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:52:01,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:01,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:01,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:52:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:52:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:52:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:01,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:52:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 14:52:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:01,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:52:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:52:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:52:01,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555302708] [2020-10-28 14:52:01,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:01,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:52:01,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143420869] [2020-10-28 14:52:01,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:52:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:01,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:52:01,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:52:01,931 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 20 states. [2020-10-28 14:52:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:03,395 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-28 14:52:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:52:03,403 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-28 14:52:03,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:03,404 INFO L225 Difference]: With dead ends: 48 [2020-10-28 14:52:03,404 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:52:03,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2020-10-28 14:52:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:52:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-28 14:52:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:52:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-28 14:52:03,418 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 49 [2020-10-28 14:52:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:03,419 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-28 14:52:03,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:52:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-28 14:52:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:52:03,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:03,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:03,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:52:03,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash -15043223, now seen corresponding path program 1 times [2020-10-28 14:52:03,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:03,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765983053] [2020-10-28 14:52:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:52:07,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-10-28 14:52:07,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 14:52:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:52:07,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:08,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:08,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:08,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:08,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-28 14:52:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:08,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:52:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:52:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:08,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:52:08,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:08,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:52:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:52:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:52:09,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 14:52:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:52:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:52:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:11,138 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-28 14:53:15,108 WARN L193 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 334 DAG size of output: 273 [2020-10-28 14:53:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:16,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:16,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:16,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:16,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:53:16,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:16,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:17,210 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 14:53:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:53:17,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765983053] [2020-10-28 14:53:17,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:17,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:53:17,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110976051] [2020-10-28 14:53:17,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:53:17,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:53:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:53:17,262 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 26 states. [2020-10-28 14:53:55,223 WARN L193 SmtUtils]: Spent 37.28 s on a formula simplification that was a NOOP. DAG size: 272 [2020-10-28 14:54:00,070 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-28 14:54:37,967 WARN L193 SmtUtils]: Spent 37.45 s on a formula simplification that was a NOOP. DAG size: 279 [2020-10-28 14:54:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:54:53,144 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-28 14:54:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:54:53,147 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2020-10-28 14:54:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:54:53,148 INFO L225 Difference]: With dead ends: 49 [2020-10-28 14:54:53,148 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:54:53,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 144.4s TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:54:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:54:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-28 14:54:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:54:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 14:54:53,160 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 49 [2020-10-28 14:54:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:54:53,161 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 14:54:53,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:54:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 14:54:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:54:53,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:54:53,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:54:53,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:54:53,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:54:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:54:53,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1548678918, now seen corresponding path program 1 times [2020-10-28 14:54:53,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:54:53,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138709574] [2020-10-28 14:54:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:54:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:54:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:54:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 14:54:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:55,206 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-28 14:54:55,513 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-28 14:54:55,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:54:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:55,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:55,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:54:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:54:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:54:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:55,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:55,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:54:55,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 14:54:55,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:55,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:54:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:54:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:54:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:56,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:56,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:54:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:54:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:56,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:56,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:54:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:54:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:54:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:57,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:57,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:54:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 14:54:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:57,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:54:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:54:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:54:57,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:57,613 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-28 14:54:58,586 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-28 14:54:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:54:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:54:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:58,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:54:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:54:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:54:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:59,085 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-28 14:54:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:54:59,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138709574] [2020-10-28 14:54:59,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:54:59,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:54:59,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241988187] [2020-10-28 14:54:59,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:54:59,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:54:59,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:54:59,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:54:59,106 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 26 states. [2020-10-28 14:55:00,199 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-28 14:55:00,460 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-28 14:55:01,729 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-28 14:55:02,286 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-28 14:55:02,773 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-28 14:55:03,159 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-28 14:55:03,566 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-28 14:55:03,903 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-28 14:55:04,220 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-28 14:55:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:55:04,518 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-10-28 14:55:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:55:04,520 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 51 [2020-10-28 14:55:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:55:04,524 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:55:04,524 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:55:04,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:55:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:55:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-28 14:55:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:55:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-28 14:55:04,537 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 51 [2020-10-28 14:55:04,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:55:04,537 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-28 14:55:04,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:55:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-28 14:55:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:55:04,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:55:04,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:55:04,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:55:04,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:55:04,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:55:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1547070204, now seen corresponding path program 1 times [2020-10-28 14:55:04,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:55:04,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104668473] [2020-10-28 14:55:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:55:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:09,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 14:55:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:55:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:55:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:55:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:09,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:09,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:55:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:09,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:55:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:55:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:55:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:55:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:55:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:55:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:55:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:10,980 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-28 14:55:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:55:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:10,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:11,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:55:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:11,736 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-28 14:55:13,949 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-28 14:55:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:55:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:14,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:55:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:14,684 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-28 14:55:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:55:14,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104668473] [2020-10-28 14:55:14,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:55:14,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:55:14,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820948684] [2020-10-28 14:55:14,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:55:14,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:55:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:55:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:55:14,709 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 28 states. [2020-10-28 14:55:15,986 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-28 14:55:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:55:19,666 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-28 14:55:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:55:19,668 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2020-10-28 14:55:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:55:19,670 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:55:19,670 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:55:19,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:55:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:55:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-28 14:55:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:55:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 14:55:19,681 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 51 [2020-10-28 14:55:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:55:19,682 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 14:55:19,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:55:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 14:55:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:55:19,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:55:19,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:55:19,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:55:19,683 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:55:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:55:19,684 INFO L82 PathProgramCache]: Analyzing trace with hash -652825131, now seen corresponding path program 2 times [2020-10-28 14:55:19,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:55:19,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102189092] [2020-10-28 14:55:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:55:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:55:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:55:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:55:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:55:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:55:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:55:20,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:55:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:55:20,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:55:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:55:20,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:55:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:55:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:55:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:55:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:55:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:55:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:55:20,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102189092] [2020-10-28 14:55:20,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:55:20,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:55:20,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548497887] [2020-10-28 14:55:20,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:55:20,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:55:20,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:55:20,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:55:20,615 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-28 14:55:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:55:21,113 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 14:55:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:55:21,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-28 14:55:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:55:21,116 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:55:21,116 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:55:21,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:55:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:55:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-28 14:55:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:55:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-28 14:55:21,126 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 53 [2020-10-28 14:55:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:55:21,127 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-28 14:55:21,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:55:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-28 14:55:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:55:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:55:21,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:55:21,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:55:21,128 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:55:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:55:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash -651216417, now seen corresponding path program 2 times [2020-10-28 14:55:21,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:55:21,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325281646] [2020-10-28 14:55:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:55:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:23,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 14:55:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:55:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:55:23,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 14:55:23,956 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-28 14:55:24,240 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-28 14:55:24,427 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-10-28 14:55:24,621 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-28 14:55:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:55:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:55:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:25,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:55:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:25,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:25,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:55:25,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:55:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:25,557 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-28 14:55:25,722 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-28 14:55:25,888 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-28 14:55:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:55:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:25,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:55:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:25,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:55:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:55:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:26,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:55:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:26,596 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-28 14:55:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:55:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:26,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:26,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:55:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:27,738 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-28 14:55:48,277 WARN L193 SmtUtils]: Spent 19.47 s on a formula simplification. DAG size of input: 405 DAG size of output: 254 [2020-10-28 14:55:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:55:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:55:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:55:49,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:55:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:55:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:55:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:55:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:55:50,283 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-28 14:55:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:55:50,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325281646] [2020-10-28 14:55:50,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:55:50,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:55:50,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622171955] [2020-10-28 14:55:50,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:55:50,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:55:50,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:55:50,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:55:50,324 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 29 states. [2020-10-28 14:55:55,213 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 245 [2020-10-28 14:55:56,227 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52