/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_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:51:32,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:51:32,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:51:32,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:51:32,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:51:32,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:51:32,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:51:32,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:51:32,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:51:32,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:51:32,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:51:32,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:51:32,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:51:32,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:51:32,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:51:32,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:51:32,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:51:32,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:51:32,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:51:32,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:51:32,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:51:32,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:51:32,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:51:32,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:51:32,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:51:32,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:51:32,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:51:32,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:51:32,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:51:32,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:51:32,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:51:32,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:51:32,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:51:32,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:51:32,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:51:32,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:51:32,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:51:32,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:51:32,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:51:32,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:51:32,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:51:32,989 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 14:51:33,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:51:33,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:51:33,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:51:33,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:51:33,046 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:51:33,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:51:33,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:51:33,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:51:33,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:51:33,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:51:33,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:51:33,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:51:33,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:51:33,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:51:33,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:51:33,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:51:33,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:51:33,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:51:33,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:51:33,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:51:33,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:51:33,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:51:33,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:51:33,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:51:33,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:51:33,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:51:33,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:51:33,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:51:33,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:51:33,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:51:33,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:51:33,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:51:33,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:51:33,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:51:33,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:51:33,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2020-10-28 14:51:33,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494adc2e5/8a8a87593fe74090abc833ae19b81086/FLAG91456b987 [2020-10-28 14:51:34,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:51:34,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2020-10-28 14:51:34,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494adc2e5/8a8a87593fe74090abc833ae19b81086/FLAG91456b987 [2020-10-28 14:51:34,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494adc2e5/8a8a87593fe74090abc833ae19b81086 [2020-10-28 14:51:34,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:51:34,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:51:34,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:51:34,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:51:34,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:51:34,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:51:34" (1/1) ... [2020-10-28 14:51:34,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c79ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:34, skipping insertion in model container [2020-10-28 14:51:34,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:51:34" (1/1) ... [2020-10-28 14:51:34,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:51:34,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:51:35,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:51:35,174 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:51:35,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:51:35,320 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:51:35,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35 WrapperNode [2020-10-28 14:51:35,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:51:35,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:51:35,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:51:35,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:51:35,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (1/1) ... [2020-10-28 14:51:35,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:51:35,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:51:35,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:51:35,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:51:35,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (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 14:51:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:51:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:51:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:51:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:51:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:51:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:51:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:51:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:51:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:51:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-28 14:51:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:51:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:51:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:51:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:51:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:51:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:51:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:51:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:51:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:51:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:51:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:51:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:51:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:51:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:51:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:51:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:51:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:51:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:51:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:51:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:51:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:51:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:51:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:51:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:51:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:51:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:51:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:51:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:51:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:51:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:51:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:51:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:51:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:51:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:51:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:51:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:51:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:51:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:51:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:51:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:51:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:51:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:51:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:51:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:51:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:51:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:51:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:51:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:51:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:51:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:51:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:51:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:51:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:51:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:51:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:51:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:51:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-28 14:51:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:51:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:51:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:51:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:51:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:51:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:51:35,976 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:51:36,226 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:51:36,226 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:51:36,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:51:36 BoogieIcfgContainer [2020-10-28 14:51:36,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:51:36,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:51:36,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:51:36,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:51:36,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:51:34" (1/3) ... [2020-10-28 14:51:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18680c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:51:36, skipping insertion in model container [2020-10-28 14:51:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:51:35" (2/3) ... [2020-10-28 14:51:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18680c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:51:36, skipping insertion in model container [2020-10-28 14:51:36,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:51:36" (3/3) ... [2020-10-28 14:51:36,238 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2020-10-28 14:51:36,253 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:51:36,259 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:51:36,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:51:36,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:51:36,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:51:36,309 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:51:36,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:51:36,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:51:36,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:51:36,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:51:36,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:51:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-28 14:51:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:51:36,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:36,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:36,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash 716274908, now seen corresponding path program 1 times [2020-10-28 14:51:36,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:36,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306442949] [2020-10-28 14:51:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:51:37,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-28 14:51:37,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 14:51:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:51:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:38,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:51:38,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:38,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:51:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:51:38,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:51:38,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:51:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:38,200 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 14:51:38,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306442949] [2020-10-28 14:51:38,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:38,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:51:38,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487210545] [2020-10-28 14:51:38,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:51:38,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:51:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:51:38,229 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-28 14:51:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:38,457 INFO L93 Difference]: Finished difference Result 101 states and 132 transitions. [2020-10-28 14:51:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:51:38,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-28 14:51:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:38,469 INFO L225 Difference]: With dead ends: 101 [2020-10-28 14:51:38,470 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:51:38,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:51:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:51:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-28 14:51:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:51:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-28 14:51:38,525 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 33 [2020-10-28 14:51:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:38,526 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-28 14:51:38,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:51:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-28 14:51:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:51:38,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:38,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:38,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:51:38,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash 707963219, now seen corresponding path program 1 times [2020-10-28 14:51:38,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:38,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228502650] [2020-10-28 14:51:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:51:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-28 14:51:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:39,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:51:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:39,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:39,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:39,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:39,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:39,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:39,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:51:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:51:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:51:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:40,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:40,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:40,110 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 14:51:40,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228502650] [2020-10-28 14:51:40,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:40,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:51:40,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414603167] [2020-10-28 14:51:40,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:51:40,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:40,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:51:40,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:51:40,115 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2020-10-28 14:51:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:40,336 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 14:51:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:51:40,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-28 14:51:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:40,339 INFO L225 Difference]: With dead ends: 56 [2020-10-28 14:51:40,339 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:51:40,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:51:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:51:40,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-28 14:51:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 14:51:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-28 14:51:40,351 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 33 [2020-10-28 14:51:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:40,352 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-28 14:51:40,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:51:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-28 14:51:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:51:40,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:40,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:40,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:51:40,354 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:40,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:40,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1593768024, now seen corresponding path program 1 times [2020-10-28 14:51:40,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:40,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495391992] [2020-10-28 14:51:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:51:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-28 14:51:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:51:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:51:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:42,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:42,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:42,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:51:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:51:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:42,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:51:42,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:51:42,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495391992] [2020-10-28 14:51:42,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:42,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:51:42,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029020265] [2020-10-28 14:51:42,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:51:42,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:42,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:51:42,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:51:42,218 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-10-28 14:51:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:42,542 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-28 14:51:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:51:42,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-28 14:51:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:42,544 INFO L225 Difference]: With dead ends: 56 [2020-10-28 14:51:42,544 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:51:42,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:51:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-28 14:51:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:51:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 14:51:42,570 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 34 [2020-10-28 14:51:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:42,570 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 14:51:42,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:51:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 14:51:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:51:42,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:42,572 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, 1, 1, 1, 1, 1] [2020-10-28 14:51:42,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:51:42,573 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1313217460, now seen corresponding path program 1 times [2020-10-28 14:51:42,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:42,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584053292] [2020-10-28 14:51:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:51:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:51:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:47,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:51:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:51:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:47,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:51:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:51:47,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:51:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:47,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584053292] [2020-10-28 14:51:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:47,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:51:47,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414720031] [2020-10-28 14:51:47,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:51:47,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:47,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:51:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:51:47,988 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 10 states. [2020-10-28 14:51:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:48,270 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-28 14:51:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:51:48,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-28 14:51:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:48,272 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:51:48,272 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:51:48,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:51:48,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-28 14:51:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:51:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-28 14:51:48,282 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 43 [2020-10-28 14:51:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:48,282 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-28 14:51:48,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:51:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-28 14:51:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:48,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:48,284 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, 1] [2020-10-28 14:51:48,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:51:48,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash 286730968, now seen corresponding path program 2 times [2020-10-28 14:51:48,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:48,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764600834] [2020-10-28 14:51:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:51:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-10-28 14:51:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:51:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:52,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:52,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:52,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:52,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:53,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 14:51:53,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764600834] [2020-10-28 14:51:53,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:53,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 14:51:53,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599052843] [2020-10-28 14:51:53,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:51:53,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:53,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:51:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:53,165 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 14 states. [2020-10-28 14:51:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:53,831 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-10-28 14:51:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:51:53,832 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-28 14:51:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:53,833 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:51:53,833 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:51:53,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:51:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:51:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-28 14:51:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:51:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-28 14:51:53,852 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 52 [2020-10-28 14:51:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:53,853 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-28 14:51:53,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:51:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-28 14:51:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:53,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:53,858 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, 1] [2020-10-28 14:51:53,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:51:53,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 288339682, now seen corresponding path program 1 times [2020-10-28 14:51:53,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:53,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433375882] [2020-10-28 14:51:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:58,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4758 [2020-10-28 14:51:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:51:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:51:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:58,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:59,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:59,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 14:51:59,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433375882] [2020-10-28 14:51:59,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:59,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 14:51:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865458989] [2020-10-28 14:51:59,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:51:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:51:59,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:51:59,442 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 15 states. [2020-10-28 14:52:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:00,383 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-28 14:52:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:52:00,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-28 14:52:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:00,387 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:52:00,387 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:52:00,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:52:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:52:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-28 14:52:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:52:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-10-28 14:52:00,397 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 52 [2020-10-28 14:52:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:00,398 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-10-28 14:52:00,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:52:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-10-28 14:52:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:52:00,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:00,399 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, 1] [2020-10-28 14:52:00,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:52:00,399 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash 679757978, now seen corresponding path program 1 times [2020-10-28 14:52:00,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:00,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108520561] [2020-10-28 14:52:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:52:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:52:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 14:52:05,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:52:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:52:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:52:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:52:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:52:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:05,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:52:05,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:05,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:05,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:52:05,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 14:52:05,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:05,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:52:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:52:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:06,334 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-28 14:52:06,616 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-10-28 14:52:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:06,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:06,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:06,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:06,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:52:06,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:06,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:52:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108520561] [2020-10-28 14:52:06,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:06,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:52:06,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921372197] [2020-10-28 14:52:06,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:52:06,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:52:06,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:52:06,920 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 14 states. [2020-10-28 14:52:07,488 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 14:52:07,907 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-10-28 14:52:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:08,159 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 14:52:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:52:08,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-28 14:52:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:08,163 INFO L225 Difference]: With dead ends: 71 [2020-10-28 14:52:08,163 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 14:52:08,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:52:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 14:52:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-28 14:52:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:52:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-28 14:52:08,175 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 52 [2020-10-28 14:52:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:08,176 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-28 14:52:08,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:52:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-28 14:52:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:52:08,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:08,177 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, 1] [2020-10-28 14:52:08,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:52:08,178 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash 681366692, now seen corresponding path program 1 times [2020-10-28 14:52:08,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:08,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516482898] [2020-10-28 14:52:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:52:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 14:52:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:52:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:52:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:52:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-10-28 14:52:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:52:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:52:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:10,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:10,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:10,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:52:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:52:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:10,797 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-28 14:52:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:11,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:11,550 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-10-28 14:52:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:52:11,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516482898] [2020-10-28 14:52:11,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:11,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:52:11,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833524140] [2020-10-28 14:52:11,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:52:11,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:11,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:52:11,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:52:11,585 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 24 states. [2020-10-28 14:52:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:13,686 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-28 14:52:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:52:13,688 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-28 14:52:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:13,690 INFO L225 Difference]: With dead ends: 66 [2020-10-28 14:52:13,691 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 14:52:13,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:52:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 14:52:13,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-10-28 14:52:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:52:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-28 14:52:13,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 52 [2020-10-28 14:52:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:13,721 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-28 14:52:13,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 14:52:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-28 14:52:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:52:13,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:13,727 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, 1, 1] [2020-10-28 14:52:13,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:52:13,727 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:13,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1813497141, now seen corresponding path program 2 times [2020-10-28 14:52:13,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:13,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778438607] [2020-10-28 14:52:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:52:17,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:17,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3772 [2020-10-28 14:52:17,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 14:52:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:52:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:52:17,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:17,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:52:17,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778438607] [2020-10-28 14:52:17,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:17,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:52:17,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965959452] [2020-10-28 14:52:17,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:52:17,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:17,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:52:17,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:52:17,948 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 8 states. [2020-10-28 14:52:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:18,230 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-28 14:52:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:52:18,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-28 14:52:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:18,232 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:52:18,233 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:52:18,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 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 14:52:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:52:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-28 14:52:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:52:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-28 14:52:18,247 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 53 [2020-10-28 14:52:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:18,247 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-28 14:52:18,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:52:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-28 14:52:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:52:18,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:18,248 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, 1, 1, 1] [2020-10-28 14:52:18,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:52:18,249 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:18,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2073165741, now seen corresponding path program 1 times [2020-10-28 14:52:18,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:18,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081008930] [2020-10-28 14:52:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:23,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:52:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:52:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:23,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:23,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:23,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:23,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:52:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:23,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:23,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:24,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:52:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-28 14:52:24,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:24,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:52:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:52:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:24,901 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-28 14:52:25,142 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-28 14:52:26,066 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-28 14:52:28,697 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 137 DAG size of output: 122 [2020-10-28 14:52:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:52:29,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081008930] [2020-10-28 14:52:29,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:29,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:52:29,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311789977] [2020-10-28 14:52:29,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:52:29,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:29,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:52:29,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:52:29,588 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 28 states. [2020-10-28 14:52:31,077 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 14:52:33,095 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 14:52:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:37,097 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-28 14:52:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:52:37,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2020-10-28 14:52:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:37,099 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:52:37,100 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:52:37,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 14:52:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:52:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-28 14:52:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:52:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-28 14:52:37,113 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 54 [2020-10-28 14:52:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:37,113 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-28 14:52:37,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:52:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-28 14:52:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:52:37,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:37,115 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, 1, 1, 1] [2020-10-28 14:52:37,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:52:37,115 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:37,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2071557027, now seen corresponding path program 1 times [2020-10-28 14:52:37,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:37,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144445423] [2020-10-28 14:52:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:52:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:52:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:39,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:52:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:39,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:39,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:52:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:52:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:52:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:52:40,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144445423] [2020-10-28 14:52:40,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:40,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:52:40,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185904067] [2020-10-28 14:52:40,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:52:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:52:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:52:40,593 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 19 states. [2020-10-28 14:52:41,902 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 14:52:42,104 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 14:52:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:42,363 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-28 14:52:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:52:42,363 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-28 14:52:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:42,365 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:52:42,365 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:52:42,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:52:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:52:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-28 14:52:42,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:52:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-28 14:52:42,377 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 54 [2020-10-28 14:52:42,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:42,378 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-28 14:52:42,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:52:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-28 14:52:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:52:42,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:42,379 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, 1, 1, 1] [2020-10-28 14:52:42,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:52:42,379 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:42,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1963636117, now seen corresponding path program 1 times [2020-10-28 14:52:42,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:42,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899089785] [2020-10-28 14:52:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:52:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4795 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:52:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:47,448 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-28 14:52:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:47,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:52:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:52:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:48,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:48,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:52:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:48,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:48,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:52:48,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:52:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:50,711 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-28 14:52:53,094 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 224 DAG size of output: 134 [2020-10-28 14:53:00,226 WARN L193 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 303 DAG size of output: 190 [2020-10-28 14:53:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:01,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:01,592 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-10-28 14:53:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:53:01,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899089785] [2020-10-28 14:53:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:53:01,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747671264] [2020-10-28 14:53:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:53:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:53:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:53:01,641 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 28 states. [2020-10-28 14:53:04,955 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 14:53:08,353 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 14:53:10,655 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-28 14:53:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:12,555 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-28 14:53:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:53:12,556 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2020-10-28 14:53:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:12,557 INFO L225 Difference]: With dead ends: 54 [2020-10-28 14:53:12,558 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:53:12,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 14:53:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:53:12,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-28 14:53:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:53:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 14:53:12,584 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 54 [2020-10-28 14:53:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:12,584 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 14:53:12,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:53:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 14:53:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:53:12,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:12,588 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, 1, 1, 1] [2020-10-28 14:53:12,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:53:12,589 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:12,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1965244831, now seen corresponding path program 1 times [2020-10-28 14:53:12,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:12,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243237457] [2020-10-28 14:53:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:53:14,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:53:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:14,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:53:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:53:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:14,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:53:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:53:14,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:53:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:14,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:53:14,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:53:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:53:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:53:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:14,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:53:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 14:53:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:14,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:53:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:53:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:15,388 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-28 14:53:15,690 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-28 14:53:15,890 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-28 14:53:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:16,367 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-28 14:53:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:53:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243237457] [2020-10-28 14:53:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:16,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 14:53:16,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049356253] [2020-10-28 14:53:16,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 14:53:16,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 14:53:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:53:16,403 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 25 states. [2020-10-28 14:53:17,895 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-28 14:53:18,342 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2020-10-28 14:53:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:19,212 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-28 14:53:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:53:19,213 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 54 [2020-10-28 14:53:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:19,214 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:53:19,215 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:53:19,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=124, Invalid=1282, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 14:53:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:53:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-28 14:53:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:53:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-28 14:53:19,228 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 54 [2020-10-28 14:53:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:19,228 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-28 14:53:19,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 14:53:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-28 14:53:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:53:19,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:19,231 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, 1, 1, 1] [2020-10-28 14:53:19,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:53:19,231 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1180053552, now seen corresponding path program 2 times [2020-10-28 14:53:19,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:19,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750053941] [2020-10-28 14:53:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3321 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:53:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:53:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:22,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:53:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:22,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:22,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:53:22,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:53:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:22,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:53:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:53:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:53:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:23,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:23,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:53:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:53:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:53:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:53:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:53:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:53:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:53:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:23,884 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-28 14:53:24,068 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-28 14:53:24,295 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-28 14:53:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:24,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:24,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:53:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:24,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:53:24,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750053941] [2020-10-28 14:53:24,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:24,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 14:53:24,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864855574] [2020-10-28 14:53:24,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 14:53:24,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:24,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 14:53:24,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:53:24,948 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 30 states. [2020-10-28 14:53:26,718 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-28 14:53:27,197 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-28 14:53:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:28,030 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-10-28 14:53:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:53:28,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-10-28 14:53:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:28,033 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:53:28,033 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:53:28,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=1915, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:53:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:53:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-28 14:53:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:53:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 14:53:28,045 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 56 [2020-10-28 14:53:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:28,045 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 14:53:28,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 14:53:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 14:53:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:53:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:28,046 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, 1, 1, 1] [2020-10-28 14:53:28,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:53:28,047 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:28,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1178444838, now seen corresponding path program 2 times [2020-10-28 14:53:28,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:28,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660645222] [2020-10-28 14:53:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:53:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-10-28 14:53:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:31,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 14:53:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:53:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:31,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:53:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:32,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:53:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:53:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:53:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:32,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:53:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:53:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:32,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:33,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:53:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:53:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:53:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:33,895 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-28 14:53:34,308 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-10-28 14:53:34,744 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2020-10-28 14:53:35,182 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-10-28 14:53:35,625 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-28 14:53:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:35,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:35,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:35,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:53:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:35,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:36,324 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-28 14:53:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:53:36,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660645222] [2020-10-28 14:53:36,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:36,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 14:53:36,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524956563] [2020-10-28 14:53:36,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 14:53:36,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:36,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 14:53:36,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:53:36,357 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 31 states. [2020-10-28 14:53:37,295 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 14:53:39,233 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2020-10-28 14:53:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:40,344 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-28 14:53:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 14:53:40,346 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-28 14:53:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:40,347 INFO L225 Difference]: With dead ends: 56 [2020-10-28 14:53:40,347 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:53:40,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=157, Invalid=2005, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 14:53:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:53:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-28 14:53:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:53:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-28 14:53:40,357 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2020-10-28 14:53:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:40,357 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-28 14:53:40,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 14:53:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-28 14:53:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:53:40,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:40,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-28 14:53:40,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:53:40,358 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1391150923, now seen corresponding path program 3 times [2020-10-28 14:53:40,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:40,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236107971] [2020-10-28 14:53:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:53:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 14:53:41,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:53:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:53:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:53:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:53:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:53:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:53:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:53:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:53:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:53:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:53:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:53:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:41,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 14:53:41,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236107971] [2020-10-28 14:53:42,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:42,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:53:42,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242351857] [2020-10-28 14:53:42,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:53:42,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:42,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:53:42,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:53:42,006 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-10-28 14:53:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:42,375 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-28 14:53:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:53:42,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-28 14:53:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:42,376 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:53:42,377 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:53:42,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:53:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:53:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-28 14:53:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:53:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 14:53:42,386 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 58 [2020-10-28 14:53:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:42,386 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 14:53:42,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:53:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 14:53:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:53:42,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:42,387 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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 14:53:42,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:53:42,388 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1392759637, now seen corresponding path program 3 times [2020-10-28 14:53:42,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:42,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141155247] [2020-10-28 14:53:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 14:53:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:45,447 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-28 14:53:45,666 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-28 14:53:45,792 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-28 14:53:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:53:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:53:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:53:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:53:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:53:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:53:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:47,749 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-28 14:53:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:53:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:48,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:53:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:53:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:50,207 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-28 14:53:50,801 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-28 14:53:51,724 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2020-10-28 14:53:56,599 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 229 DAG size of output: 164 [2020-10-28 14:54:16,127 WARN L193 SmtUtils]: Spent 18.11 s on a formula simplification. DAG size of input: 512 DAG size of output: 257 [2020-10-28 14:54:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:54:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:18,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:18,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:54:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:54:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:18,484 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-28 14:54:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:54:18,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141155247] [2020-10-28 14:54:18,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:54:18,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 14:54:18,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021080115] [2020-10-28 14:54:18,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 14:54:18,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:54:18,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 14:54:18,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 14:54:18,547 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 34 states. [2020-10-28 14:54:19,818 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-28 14:54:21,993 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-28 14:54:22,467 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-28 14:54:23,418 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 14:54:23,753 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 14:54:24,115 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 14:54:24,526 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 14:54:24,820 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 14:54:25,431 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-28 14:54:25,872 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-28 14:54:26,494 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2020-10-28 14:54:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:54:27,124 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-28 14:54:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 14:54:27,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 58 [2020-10-28 14:54:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:54:27,126 INFO L225 Difference]: With dead ends: 79 [2020-10-28 14:54:27,126 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 14:54:27,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=254, Invalid=2608, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 14:54:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 14:54:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-10-28 14:54:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 14:54:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-28 14:54:27,140 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 58 [2020-10-28 14:54:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:54:27,140 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-28 14:54:27,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 14:54:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-28 14:54:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 14:54:27,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:54:27,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2020-10-28 14:54:27,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:54:27,142 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:54:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:54:27,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1582511098, now seen corresponding path program 4 times [2020-10-28 14:54:27,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:54:27,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659936795] [2020-10-28 14:54:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:54:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:30,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:30,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 14:54:30,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 14:54:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:30,884 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-10-28 14:54:31,142 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-28 14:54:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:54:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:31,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:54:31,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:54:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:31,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:54:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:54:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:31,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:54:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:54:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:54:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:54:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:54:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:54:32,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:54:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:54:32,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:54:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:54:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:33,172 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-28 14:54:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:54:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:54:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:54:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:54:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:54:33,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:54:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:54:37,889 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2020-10-28 14:54:53,099 WARN L193 SmtUtils]: Spent 14.12 s on a formula simplification. DAG size of input: 457 DAG size of output: 231