/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:04:00,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:00,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:00,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:04:00,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:04:00,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:04:00,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:04:00,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:04:00,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:04:00,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:04:00,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:04:00,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:04:00,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:00,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:00,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:00,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:00,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:00,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:00,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:00,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:00,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:00,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:00,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:00,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:00,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:04:00,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:04:00,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:04:00,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:04:00,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:04:00,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:04:00,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:04:00,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:04:00,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:04:00,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:04:00,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:04:00,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:04:00,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:04:00,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:04:00,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:04:00,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:04:00,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:04:00,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:00,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:00,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:00,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:00,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:00,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:00,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:00,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:00,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:00,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:00,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:00,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:00,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:00,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:00,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:00,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:00,253 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:00,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:00,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:00,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:00,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:00,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:00,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:00,256 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:00,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:00,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:00,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:00,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:00,784 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:00,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-23 23:04:00,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f16b67b/47a9aa402b484417ad773e0202964f19/FLAGf1821aedd [2021-02-23 23:04:01,588 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:01,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-23 23:04:01,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f16b67b/47a9aa402b484417ad773e0202964f19/FLAGf1821aedd [2021-02-23 23:04:01,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f16b67b/47a9aa402b484417ad773e0202964f19 [2021-02-23 23:04:01,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:01,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:01,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:01,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:01,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:01,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:01" (1/1) ... [2021-02-23 23:04:01,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bf06d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:01, skipping insertion in model container [2021-02-23 23:04:01,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:01" (1/1) ... [2021-02-23 23:04:01,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:01,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:02,173 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i[813,826] [2021-02-23 23:04:02,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:02,329 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:02,345 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i[813,826] [2021-02-23 23:04:02,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:02,481 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:02,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02 WrapperNode [2021-02-23 23:04:02,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:02,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:02,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:02,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:02,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... [2021-02-23 23:04:02,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:02,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:02,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:02,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:02,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-23 23:04:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 23:04:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-02-23 23:04:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-02-23 23:04:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:04:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:04:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 23:04:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:04:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:04:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:04:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:04:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:04:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:04:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:04:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:04:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:04:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:04:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:04:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:04:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:04:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:04:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:04:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:04:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:04:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:04:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 23:04:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:04:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:04:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:04:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:04:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:04:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:04:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:04:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:04:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:04:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:04:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:04:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:04:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:04:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:04:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:04:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:04:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:04:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:04:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:04:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:04:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:04:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:04:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:04:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:04:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:04:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:04:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:04:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:04:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:04:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:04:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:04:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:04:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:04:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:04:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:04:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:04:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:04:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:04:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:04:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:04:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:04:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:04:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:04:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:04:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:03,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:03,398 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 23:04:03,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:03 BoogieIcfgContainer [2021-02-23 23:04:03,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:03,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:03,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:03,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:03,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:01" (1/3) ... [2021-02-23 23:04:03,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a009c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:03, skipping insertion in model container [2021-02-23 23:04:03,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:02" (2/3) ... [2021-02-23 23:04:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a009c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:03, skipping insertion in model container [2021-02-23 23:04:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:03" (3/3) ... [2021-02-23 23:04:03,409 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2021-02-23 23:04:03,417 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:03,423 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:03,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:03,468 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:03,468 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:03,468 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:03,468 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:03,468 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:03,469 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:03,469 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:03,469 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2021-02-23 23:04:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 23:04:03,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:03,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:03,500 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1236516545, now seen corresponding path program 1 times [2021-02-23 23:04:03,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:03,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510016316] [2021-02-23 23:04:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:03,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:03,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:03,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:03,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:03,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:03,962 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 23:04:03,963 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 23:04:03,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:03,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:03,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:04,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:04,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-23 23:04:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:04,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:04,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-23 23:04:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:04,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 23:04:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:04,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:04,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:04,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-23 23:04:04,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510016316] [2021-02-23 23:04:04,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:04,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 23:04:04,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788436682] [2021-02-23 23:04:04,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:04:04,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:04:04,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:04,239 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 9 states. [2021-02-23 23:04:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:04,925 INFO L93 Difference]: Finished difference Result 192 states and 230 transitions. [2021-02-23 23:04:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:04:04,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2021-02-23 23:04:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:04,939 INFO L225 Difference]: With dead ends: 192 [2021-02-23 23:04:04,939 INFO L226 Difference]: Without dead ends: 96 [2021-02-23 23:04:04,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:04:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-23 23:04:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2021-02-23 23:04:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-23 23:04:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-02-23 23:04:05,014 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 86 [2021-02-23 23:04:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:05,015 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-02-23 23:04:05,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:04:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-02-23 23:04:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-23 23:04:05,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:05,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:05,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:05,034 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:05,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1097503254, now seen corresponding path program 1 times [2021-02-23 23:04:05,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:05,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920956787] [2021-02-23 23:04:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:05,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,235 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 23:04:05,236 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 23:04:05,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:05,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:05,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:05,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:05,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:05,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:05,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-02-23 23:04:05,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920956787] [2021-02-23 23:04:05,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:05,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 23:04:05,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359332884] [2021-02-23 23:04:05,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:04:05,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:04:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:04:05,329 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2021-02-23 23:04:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:06,118 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2021-02-23 23:04:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:04:06,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2021-02-23 23:04:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:06,123 INFO L225 Difference]: With dead ends: 117 [2021-02-23 23:04:06,123 INFO L226 Difference]: Without dead ends: 94 [2021-02-23 23:04:06,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:04:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-23 23:04:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2021-02-23 23:04:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 23:04:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-02-23 23:04:06,146 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 93 [2021-02-23 23:04:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:06,147 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-02-23 23:04:06,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:04:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-02-23 23:04:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-23 23:04:06,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:06,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:06,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:06,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:06,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1922674771, now seen corresponding path program 1 times [2021-02-23 23:04:06,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:06,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877255927] [2021-02-23 23:04:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:04:06,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:06,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:06,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:06,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:06,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:06,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:06,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:04:06,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-23 23:04:06,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-23 23:04:06,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-23 23:04:06,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:06,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-23 23:04:06,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877255927] [2021-02-23 23:04:06,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:06,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 23:04:06,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122308649] [2021-02-23 23:04:06,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:04:06,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:06,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:04:06,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:04:06,669 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 14 states. [2021-02-23 23:04:07,489 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-23 23:04:07,634 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-02-23 23:04:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:07,982 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-02-23 23:04:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 23:04:07,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 95 [2021-02-23 23:04:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:07,985 INFO L225 Difference]: With dead ends: 104 [2021-02-23 23:04:07,985 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 23:04:07,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-02-23 23:04:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 23:04:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-02-23 23:04:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 23:04:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-02-23 23:04:08,009 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 95 [2021-02-23 23:04:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:08,009 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-02-23 23:04:08,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:04:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-02-23 23:04:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-02-23 23:04:08,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:08,012 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:08,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:04:08,012 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash -150000509, now seen corresponding path program 1 times [2021-02-23 23:04:08,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:08,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495651010] [2021-02-23 23:04:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:08,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:08,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,250 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 23:04:08,251 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 23:04:08,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:08,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:08,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:08,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:08,323 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-23 23:04:08,324 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-23 23:04:08,338 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-23 23:04:08,339 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-23 23:04:08,355 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-23 23:04:08,356 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-23 23:04:08,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:08,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:08,399 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-23 23:04:08,400 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-23 23:04:08,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:08,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:08,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:08,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:08,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-02-23 23:04:08,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495651010] [2021-02-23 23:04:08,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:08,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 23:04:08,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813371400] [2021-02-23 23:04:08,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 23:04:08,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:08,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 23:04:08,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:04:08,551 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 18 states. [2021-02-23 23:04:09,967 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-02-23 23:04:10,146 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-02-23 23:04:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:10,803 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-02-23 23:04:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 23:04:10,804 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2021-02-23 23:04:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:10,806 INFO L225 Difference]: With dead ends: 142 [2021-02-23 23:04:10,807 INFO L226 Difference]: Without dead ends: 119 [2021-02-23 23:04:10,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 23:04:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-23 23:04:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 91. [2021-02-23 23:04:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 23:04:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-02-23 23:04:10,860 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 103 [2021-02-23 23:04:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:10,861 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-02-23 23:04:10,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 23:04:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-02-23 23:04:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-02-23 23:04:10,875 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:10,876 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:10,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:04:10,876 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1905603578, now seen corresponding path program 1 times [2021-02-23 23:04:10,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:10,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536937854] [2021-02-23 23:04:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:10,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:11,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:04:11,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:11,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:11,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:11,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:11,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:11,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:11,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:11,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:11,321 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 23:04:11,322 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 23:04:11,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:11,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:04:11,445 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 23:04:11,447 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 23:04:11,479 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 23:04:11,480 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 23:04:11,516 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 23:04:11,517 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 23:04:11,519 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-23 23:04:11,519 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-23 23:04:11,561 WARN L141 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-02-23 23:04:11,562 WARN L147 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size 48 [2021-02-23 23:04:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,630 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-23 23:04:11,631 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-23 23:04:11,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 23:04:11,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 23:04:11,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 23:04:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-02-23 23:04:11,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536937854] [2021-02-23 23:04:11,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:11,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-23 23:04:11,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750659639] [2021-02-23 23:04:11,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 23:04:11,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 23:04:11,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2021-02-23 23:04:11,868 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 26 states. [2021-02-23 23:04:14,150 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-02-23 23:04:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:14,594 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-02-23 23:04:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 23:04:14,595 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2021-02-23 23:04:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:14,597 INFO L225 Difference]: With dead ends: 123 [2021-02-23 23:04:14,597 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 23:04:14,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 23:04:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 23:04:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-02-23 23:04:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-23 23:04:14,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-02-23 23:04:14,626 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 105 [2021-02-23 23:04:14,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:14,627 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-02-23 23:04:14,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 23:04:14,627 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-02-23 23:04:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-23 23:04:14,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:14,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:14,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:04:14,629 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:14,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1705131996, now seen corresponding path program 2 times [2021-02-23 23:04:14,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:14,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878057142] [2021-02-23 23:04:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:14,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:14,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:04:14,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:04:14,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:14,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:14,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:14,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:14,832 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 23:04:14,833 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 23:04:14,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:14,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:14,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:14,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:14,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:14,946 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-23 23:04:14,947 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-23 23:04:14,966 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 23:04:14,966 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 23:04:14,996 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 23:04:14,997 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 23:04:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:15,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:15,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:04:15,111 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 23:04:15,112 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 23:04:15,145 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 23:04:15,146 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 23:04:15,180 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 23:04:15,182 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 23:04:15,183 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-23 23:04:15,184 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-23 23:04:15,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 23:04:15,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:15,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:15,283 WARN L141 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-02-23 23:04:15,283 WARN L147 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size 20 [2021-02-23 23:04:15,329 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-02-23 23:04:15,329 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size 20 [2021-02-23 23:04:15,359 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size [2021-02-23 23:04:15,360 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-02-23 23:04:15,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 23:04:15,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 23:04:15,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:04:15,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:15,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 23:04:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-02-23 23:04:15,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878057142] [2021-02-23 23:04:15,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:15,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-02-23 23:04:15,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964558912] [2021-02-23 23:04:15,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 23:04:15,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 23:04:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-02-23 23:04:15,641 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 27 states. [2021-02-23 23:04:17,702 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-02-23 23:04:18,683 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-02-23 23:04:18,937 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-02-23 23:04:19,114 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-23 23:04:19,278 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-02-23 23:04:19,464 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-23 23:04:19,719 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-02-23 23:04:19,888 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-02-23 23:04:20,046 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-02-23 23:04:20,226 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-02-23 23:04:20,582 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-23 23:04:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:20,708 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2021-02-23 23:04:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 23:04:20,709 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 113 [2021-02-23 23:04:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:20,712 INFO L225 Difference]: With dead ends: 164 [2021-02-23 23:04:20,712 INFO L226 Difference]: Without dead ends: 141 [2021-02-23 23:04:20,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=591, Invalid=3569, Unknown=0, NotChecked=0, Total=4160 [2021-02-23 23:04:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-23 23:04:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2021-02-23 23:04:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-23 23:04:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2021-02-23 23:04:20,747 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 113 [2021-02-23 23:04:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:20,747 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2021-02-23 23:04:20,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 23:04:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2021-02-23 23:04:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-23 23:04:20,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:20,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:20,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:04:20,749 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1534694113, now seen corresponding path program 2 times [2021-02-23 23:04:20,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:20,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927289941] [2021-02-23 23:04:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:20,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:04:20,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 23:04:20,868 WARN L141 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size [2021-02-23 23:04:20,869 WARN L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-02-23 23:04:20,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:20,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:20,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:20,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:20,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:20,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:20,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:20,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:21,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:21,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:21,034 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 23:04:21,034 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 23:04:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:21,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:21,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:04:21,125 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 23:04:21,125 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 23:04:21,153 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-23 23:04:21,154 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-23 23:04:21,183 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-23 23:04:21,185 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-23 23:04:21,186 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-02-23 23:04:21,188 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-02-23 23:04:21,229 WARN L141 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-02-23 23:04:21,230 WARN L147 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size 53 [2021-02-23 23:04:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:21,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:04:21,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 23:04:21,400 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-02-23 23:04:21,400 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size 24 [2021-02-23 23:04:21,437 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-23 23:04:21,437 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-23 23:04:21,491 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-23 23:04:21,492 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-23 23:04:21,495 WARN L141 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size [2021-02-23 23:04:21,496 WARN L147 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size 49 [2021-02-23 23:04:21,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-02-23 23:04:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:21,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:21,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:21,701 WARN L141 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size [2021-02-23 23:04:21,702 WARN L147 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size 23 [2021-02-23 23:04:21,767 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-02-23 23:04:21,767 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size 30 [2021-02-23 23:04:21,837 WARN L141 QuantifierPusher]: treesize reduction 13, result has 72.9 percent of original size [2021-02-23 23:04:21,838 WARN L147 QuantifierPusher]: treesize reduction 13, result has 72.9 percent of original size 35 [2021-02-23 23:04:21,894 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-02-23 23:04:21,895 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-02-23 23:04:21,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:21,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 23:04:22,031 WARN L141 QuantifierPusher]: treesize reduction 27, result has 85.8 percent of original size [2021-02-23 23:04:22,033 WARN L147 QuantifierPusher]: treesize reduction 27, result has 85.8 percent of original size 163 [2021-02-23 23:04:22,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 23:04:22,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-02-23 23:04:22,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-02-23 23:04:22,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-02-23 23:04:22,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-02-23 23:04:22,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:22,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-02-23 23:04:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 23:04:22,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927289941] [2021-02-23 23:04:22,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:22,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-02-23 23:04:22,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132852078] [2021-02-23 23:04:22,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-23 23:04:22,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:22,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-23 23:04:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1248, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 23:04:22,986 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 37 states. [2021-02-23 23:04:24,252 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-02-23 23:04:25,894 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-02-23 23:04:26,113 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-02-23 23:04:26,344 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2021-02-23 23:04:26,618 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2021-02-23 23:04:26,888 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-23 23:04:27,150 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-02-23 23:04:27,449 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-02-23 23:04:27,723 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-23 23:04:27,964 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2021-02-23 23:04:28,221 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2021-02-23 23:04:28,500 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2021-02-23 23:04:28,753 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-02-23 23:04:29,068 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-02-23 23:04:29,450 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-02-23 23:04:29,727 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2021-02-23 23:04:29,995 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2021-02-23 23:04:30,311 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-02-23 23:04:30,614 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-02-23 23:04:30,956 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-23 23:04:31,266 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2021-02-23 23:04:31,629 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-02-23 23:04:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:31,887 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-02-23 23:04:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-23 23:04:31,888 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 115 [2021-02-23 23:04:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:31,891 INFO L225 Difference]: With dead ends: 145 [2021-02-23 23:04:31,891 INFO L226 Difference]: Without dead ends: 132 [2021-02-23 23:04:31,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=708, Invalid=5144, Unknown=0, NotChecked=0, Total=5852 [2021-02-23 23:04:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-23 23:04:31,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2021-02-23 23:04:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-23 23:04:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2021-02-23 23:04:31,924 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 115 [2021-02-23 23:04:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:31,925 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2021-02-23 23:04:31,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-02-23 23:04:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2021-02-23 23:04:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-02-23 23:04:31,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:31,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:31,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:04:31,927 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:31,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1254377483, now seen corresponding path program 3 times [2021-02-23 23:04:31,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:31,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682991347] [2021-02-23 23:04:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:32,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:32,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:04:32,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:04:32,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-23 23:04:32,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:32,140 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 23:04:32,141 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 23:04:32,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:32,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:32,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:04:32,229 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-23 23:04:32,230 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-23 23:04:32,250 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 23:04:32,251 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 23:04:32,275 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 23:04:32,276 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 23:04:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 23:04:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:32,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 23:04:32,396 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-02-23 23:04:32,397 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size 27 [2021-02-23 23:04:32,433 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-23 23:04:32,433 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-23 23:04:32,504 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-23 23:04:32,505 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-23 23:04:32,506 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size [2021-02-23 23:04:32,507 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size 42 [2021-02-23 23:04:32,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-23 23:04:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 23:04:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:04:32,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:04:32,690 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-23 23:04:32,691 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-23 23:04:32,730 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-23 23:04:32,730 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-23 23:04:32,774 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-23 23:04:32,775 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-23 23:04:32,776 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-02-23 23:04:32,776 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-02-23 23:04:32,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-23 23:04:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 23:04:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:32,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:32,923 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-23 23:04:32,924 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-23 23:04:32,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:32,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 23:04:32,994 WARN L141 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size [2021-02-23 23:04:32,995 WARN L147 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size 29 [2021-02-23 23:04:33,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:33,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 23:04:33,103 WARN L141 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-02-23 23:04:33,104 WARN L147 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size 45 [2021-02-23 23:04:33,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:33,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 23:04:33,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:33,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 23:04:33,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:33,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-23 23:04:33,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:33,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 23:04:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 23:04:33,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682991347] [2021-02-23 23:04:33,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:33,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-02-23 23:04:33,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914483472] [2021-02-23 23:04:33,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-23 23:04:33,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:33,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-23 23:04:33,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 23:04:33,512 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand 36 states. [2021-02-23 23:04:34,517 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-02-23 23:04:35,393 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-02-23 23:04:36,235 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-02-23 23:04:37,175 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-02-23 23:04:37,636 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-02-23 23:04:37,875 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-02-23 23:04:38,188 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-02-23 23:04:38,431 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-02-23 23:04:38,649 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-23 23:04:38,886 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-02-23 23:04:39,217 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-02-23 23:04:39,445 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-02-23 23:04:39,655 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2021-02-23 23:04:39,893 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-02-23 23:04:40,229 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-02-23 23:04:40,466 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-02-23 23:04:40,665 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-02-23 23:04:40,895 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-23 23:04:41,356 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-23 23:04:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:41,514 INFO L93 Difference]: Finished difference Result 177 states and 183 transitions. [2021-02-23 23:04:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-23 23:04:41,515 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 123 [2021-02-23 23:04:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:41,517 INFO L225 Difference]: With dead ends: 177 [2021-02-23 23:04:41,517 INFO L226 Difference]: Without dead ends: 154 [2021-02-23 23:04:41,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=845, Invalid=5635, Unknown=0, NotChecked=0, Total=6480 [2021-02-23 23:04:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-02-23 23:04:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2021-02-23 23:04:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-23 23:04:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-02-23 23:04:41,566 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 123 [2021-02-23 23:04:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:41,566 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-02-23 23:04:41,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-23 23:04:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-02-23 23:04:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-23 23:04:41,567 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:41,568 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:41,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:04:41,568 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1940013816, now seen corresponding path program 3 times [2021-02-23 23:04:41,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:41,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782633905] [2021-02-23 23:04:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:41,615 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:41,649 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:41,717 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:04:41,717 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:04:41,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:04:41,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:04:41 BoogieIcfgContainer [2021-02-23 23:04:41,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:04:41,840 INFO L168 Benchmark]: Toolchain (without parser) took 39941.41 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 126.8 MB in the beginning and 191.9 MB in the end (delta: -65.2 MB). Peak memory consumption was 115.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,841 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:04:41,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.04 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 133.7 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,841 INFO L168 Benchmark]: Boogie Preprocessor took 139.08 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 131.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,841 INFO L168 Benchmark]: RCFGBuilder took 775.01 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 131.0 MB in the end (delta: 110.0 kB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,842 INFO L168 Benchmark]: TraceAbstraction took 38437.26 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 130.5 MB in the beginning and 191.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.04 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 133.7 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.08 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 131.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 775.01 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 131.0 MB in the end (delta: 110.0 kB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38437.26 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 130.5 MB in the beginning and 191.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L533] mlist *head; VAL [\old(head)=76, \old(head)=62, head={0:0}] [L554] int i; VAL [\old(head)=0, \old(head)=0, head={0:0}] [L555] mlist *mylist, *temp; VAL [\old(head)=0, \old(head)=0, head={0:0}] [L556] CALL insert_list(mylist,2) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={0:0}, l={61:54}] [L542] l = (mlist*)malloc(sizeof(mlist)) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={0:0}, k=2, l={-1:0}, l={61:54}, malloc(sizeof(mlist))={-1:0}] [L543] l->key = k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={0:0}, k=2, l={-1:0}, l={61:54}, malloc(sizeof(mlist))={-1:0}] [L544] COND TRUE head==((void *)0) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={0:0}, k=2, l={-1:0}, l={61:54}, malloc(sizeof(mlist))={-1:0}] [L545] l->next = ((void *)0) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={0:0}, k=2, l={61:54}, l={-1:0}, malloc(sizeof(mlist))={-1:0}] [L550] head = l VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-1:0}, k=2, l={-1:0}, l={61:54}, malloc(sizeof(mlist))={-1:0}] [L551] return 0; VAL [\old(head)=0, \old(head)=0, \old(k)=2, \result=0, head={-1:0}, k=2, l={61:54}, l={-1:0}, malloc(sizeof(mlist))={-1:0}] [L556] RET insert_list(mylist,2) VAL [\old(head)=0, \old(head)=0, head={-1:0}, insert_list(mylist,2)=0, mylist={61:54}] [L557] CALL insert_list(mylist,5) VAL [\old(head)=0, \old(head)=-1, \old(k)=5, head={-1:0}, l={61:54}] [L542] l = (mlist*)malloc(sizeof(mlist)) VAL [\old(head)=0, \old(head)=-1, \old(k)=5, head={-1:0}, k=5, l={61:54}, l={-2:0}, malloc(sizeof(mlist))={-2:0}] [L543] l->key = k VAL [\old(head)=0, \old(head)=-1, \old(k)=5, head={-1:0}, k=5, l={-2:0}, l={61:54}, malloc(sizeof(mlist))={-2:0}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=-1, \old(head)=0, \old(k)=5, head={-1:0}, k=5, l={-2:0}, l={61:54}, malloc(sizeof(mlist))={-2:0}] [L547] l->key = k VAL [\old(head)=-1, \old(head)=0, \old(k)=5, head={-1:0}, k=5, l={61:54}, l={-2:0}, malloc(sizeof(mlist))={-2:0}] [L548] l->next = head VAL [\old(head)=0, \old(head)=-1, \old(k)=5, head={-1:0}, k=5, l={-2:0}, l={61:54}, malloc(sizeof(mlist))={-2:0}] [L550] head = l VAL [\old(head)=-1, \old(head)=0, \old(k)=5, head={-2:0}, k=5, l={-2:0}, l={61:54}, malloc(sizeof(mlist))={-2:0}] [L551] return 0; VAL [\old(head)=-1, \old(head)=0, \old(k)=5, \result=0, head={-2:0}, k=5, l={61:54}, l={-2:0}, malloc(sizeof(mlist))={-2:0}] [L557] RET insert_list(mylist,5) VAL [\old(head)=0, \old(head)=0, head={-2:0}, insert_list(mylist,5)=0, mylist={61:54}] [L558] CALL insert_list(mylist,1) VAL [\old(head)=0, \old(head)=-2, \old(k)=1, head={-2:0}, l={61:54}] [L542] l = (mlist*)malloc(sizeof(mlist)) VAL [\old(head)=0, \old(head)=-2, \old(k)=1, head={-2:0}, k=1, l={-3:0}, l={61:54}, malloc(sizeof(mlist))={-3:0}] [L543] l->key = k VAL [\old(head)=0, \old(head)=-2, \old(k)=1, head={-2:0}, k=1, l={61:54}, l={-3:0}, malloc(sizeof(mlist))={-3:0}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=-2, \old(head)=0, \old(k)=1, head={-2:0}, k=1, l={61:54}, l={-3:0}, malloc(sizeof(mlist))={-3:0}] [L547] l->key = k VAL [\old(head)=-2, \old(head)=0, \old(k)=1, head={-2:0}, k=1, l={61:54}, l={-3:0}, malloc(sizeof(mlist))={-3:0}] [L548] l->next = head VAL [\old(head)=-2, \old(head)=0, \old(k)=1, head={-2:0}, k=1, l={61:54}, l={-3:0}, malloc(sizeof(mlist))={-3:0}] [L550] head = l VAL [\old(head)=0, \old(head)=-2, \old(k)=1, head={-3:0}, k=1, l={61:54}, l={-3:0}, malloc(sizeof(mlist))={-3:0}] [L551] return 0; VAL [\old(head)=-2, \old(head)=0, \old(k)=1, \result=0, head={-3:0}, k=1, l={-3:0}, l={61:54}, malloc(sizeof(mlist))={-3:0}] [L558] RET insert_list(mylist,1) VAL [\old(head)=0, \old(head)=0, head={-3:0}, insert_list(mylist,1)=0, mylist={61:54}] [L559] CALL insert_list(mylist,3) VAL [\old(head)=-3, \old(head)=0, \old(k)=3, head={-3:0}, l={61:54}] [L542] l = (mlist*)malloc(sizeof(mlist)) VAL [\old(head)=-3, \old(head)=0, \old(k)=3, head={-3:0}, k=3, l={-4:0}, l={61:54}, malloc(sizeof(mlist))={-4:0}] [L543] l->key = k VAL [\old(head)=-3, \old(head)=0, \old(k)=3, head={-3:0}, k=3, l={-4:0}, l={61:54}, malloc(sizeof(mlist))={-4:0}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=-3, \old(head)=0, \old(k)=3, head={-3:0}, k=3, l={61:54}, l={-4:0}, malloc(sizeof(mlist))={-4:0}] [L547] l->key = k VAL [\old(head)=-3, \old(head)=0, \old(k)=3, head={-3:0}, k=3, l={-4:0}, l={61:54}, malloc(sizeof(mlist))={-4:0}] [L548] l->next = head VAL [\old(head)=0, \old(head)=-3, \old(k)=3, head={-3:0}, k=3, l={61:54}, l={-4:0}, malloc(sizeof(mlist))={-4:0}] [L550] head = l VAL [\old(head)=0, \old(head)=-3, \old(k)=3, head={-4:0}, k=3, l={61:54}, l={-4:0}, malloc(sizeof(mlist))={-4:0}] [L551] return 0; VAL [\old(head)=0, \old(head)=-3, \old(k)=3, \result=0, head={-4:0}, k=3, l={61:54}, l={-4:0}, malloc(sizeof(mlist))={-4:0}] [L559] RET insert_list(mylist,3) VAL [\old(head)=0, \old(head)=0, head={-4:0}, insert_list(mylist,3)=0, mylist={61:54}] [L560] CALL, EXPR search_list(head,2) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, l={-4:0}] [L535] l = head VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L536] COND TRUE l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L537] EXPR l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-4:0}, l->next={-3:0}] [L537] l = l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-3:0}, l={-4:0}, l->next={-3:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-3:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-3:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-3:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L536] COND TRUE l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-3:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L537] EXPR l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-3:0}, l={-4:0}, l->next={-2:0}] [L537] l = l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-2:0}, l->next={-2:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-2:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-2:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-2:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L536] COND TRUE l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-2:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L537] EXPR l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-2:0}, l->next={-1:0}] [L537] l = l->next VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-1:0}, l->next={-1:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-4:0}, l={-1:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-1:0}, l={-4:0}, l!=((void *)0) && l->key!=k=1, l->key=2] [L536] l!=((void *)0) && l->key!=k VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-1:0}, l={-4:0}, l!=((void *)0) && l->key!=k=0, l->key=2] [L536] COND FALSE !(l!=((void *)0) && l->key!=k) VAL [\old(head)=0, \old(head)=0, \old(k)=2, head={-4:0}, k=2, l={-1:0}, l={-4:0}, l!=((void *)0) && l->key!=k=0, l->key=2] [L539] return l; VAL [\old(head)=0, \old(head)=0, \old(k)=2, \result={-1:0}, head={-4:0}, k=2, l={-4:0}, l={-1:0}] [L560] RET, EXPR search_list(head,2) VAL [\old(head)=0, \old(head)=0, head={-4:0}, mylist={61:54}, search_list(head,2)={-1:0}] [L560] temp = search_list(head,2) VAL [\old(head)=0, \old(head)=0, head={-4:0}, mylist={61:54}, search_list(head,2)={-1:0}, temp={-1:0}] [L561] EXPR temp->key VAL [\old(head)=0, \old(head)=0, head={-4:0}, mylist={61:54}, temp={-1:0}, temp->key=2] [L561] CALL __VERIFIER_assert(temp->key==1) VAL [\old(cond)=0, \old(head)=0, \old(head)=0, head={-4:0}] [L14] COND TRUE !(cond) VAL [\old(cond)=0, \old(head)=0, \old(head)=0, cond=0, head={-4:0}] [L15] reach_error() VAL [\old(cond)=0, \old(head)=0, \old(head)=0, cond=0, head={-4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.2s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 2258 SDslu, 2657 SDs, 0 SdLazy, 9356 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 24.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 958 NumberOfCodeBlocks, 958 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 825 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 377/611 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...