/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:16:13,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:16:13,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:16:13,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:16:13,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:16:13,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:16:13,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:16:13,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:16:13,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:16:13,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:16:13,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:16:13,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:16:13,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:16:13,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:16:13,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:16:13,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:16:13,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:16:13,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:16:13,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:16:13,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:16:13,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:16:13,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:16:13,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:16:13,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:16:13,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:16:13,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:16:13,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:16:13,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:16:13,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:16:13,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:16:13,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:16:13,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:16:13,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:16:13,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:16:13,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:16:13,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:16:13,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:16:13,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:16:13,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:16:13,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:16:13,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:16:13,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 07:16:13,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:16:13,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:16:13,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:16:13,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:16:13,950 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:16:13,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:16:13,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:16:13,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:16:13,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:16:13,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:16:13,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:16:13,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:16:13,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:16:13,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:16:13,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:16:13,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:16:13,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:16:13,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 07:16:13,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:16:13,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:16:14,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:16:14,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:16:14,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:16:14,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:16:14,265 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:16:14,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2020-04-18 07:16:14,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6aea594/f49282c3d266466bb3163eef39cf3295/FLAG602c9fd51 [2020-04-18 07:16:14,921 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:16:14,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2020-04-18 07:16:14,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6aea594/f49282c3d266466bb3163eef39cf3295/FLAG602c9fd51 [2020-04-18 07:16:15,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6aea594/f49282c3d266466bb3163eef39cf3295 [2020-04-18 07:16:15,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:16:15,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:16:15,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:16:15,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:16:15,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:16:15,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:16:15" (1/1) ... [2020-04-18 07:16:15,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0d4e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:15, skipping insertion in model container [2020-04-18 07:16:15,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:16:15" (1/1) ... [2020-04-18 07:16:15,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:16:15,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:16:16,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:16:16,109 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:16:16,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:16:16,727 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:16:16,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16 WrapperNode [2020-04-18 07:16:16,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:16:16,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:16:16,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:16:16,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:16:16,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:16:16,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:16:16,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:16:16,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:16:16,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (1/1) ... [2020-04-18 07:16:16,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:16:16,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:16:16,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:16:16,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:16:16,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (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 [2020-04-18 07:16:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:16:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:16:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-04-18 07:16:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:16:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:16:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2020-04-18 07:16:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2020-04-18 07:16:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:16:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:16:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 07:16:16,934 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:16:17,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:16:17,676 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-04-18 07:16:17,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:16:17 BoogieIcfgContainer [2020-04-18 07:16:17,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:16:17,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:16:17,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:16:17,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:16:17,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:16:15" (1/3) ... [2020-04-18 07:16:17,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681afc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:16:17, skipping insertion in model container [2020-04-18 07:16:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:16" (2/3) ... [2020-04-18 07:16:17,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681afc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:16:17, skipping insertion in model container [2020-04-18 07:16:17,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:16:17" (3/3) ... [2020-04-18 07:16:17,695 INFO L109 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2020-04-18 07:16:17,707 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:16:17,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:16:17,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-04-18 07:16:17,719 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:16:17,752 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,752 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,752 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,753 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,753 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,753 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,753 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,753 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,754 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,755 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,755 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,755 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,755 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,755 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,756 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,757 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,757 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,757 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,757 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,758 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,758 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,758 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,758 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,759 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,759 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,759 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,759 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,760 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,760 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,760 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,760 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,761 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,761 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,761 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,761 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,761 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,762 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,762 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,762 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,763 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,763 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,763 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,763 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,764 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,764 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,764 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,764 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,765 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,769 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,769 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,769 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,770 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,770 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,770 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,770 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,771 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,771 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,771 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,771 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,781 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,782 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,782 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,782 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,783 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,783 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,783 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,783 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,784 WARN L315 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,784 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,784 WARN L315 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:16:17,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:16:17,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:16:17,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:16:17,847 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:16:17,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:16:17,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:16:17,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:16:17,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:16:17,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:16:17,869 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 131 transitions, 284 flow [2020-04-18 07:16:18,172 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5573 states. [2020-04-18 07:16:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states. [2020-04-18 07:16:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 07:16:18,190 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:18,192 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:18,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1827347688, now seen corresponding path program 1 times [2020-04-18 07:16:18,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:18,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789521415] [2020-04-18 07:16:18,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:18,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789521415] [2020-04-18 07:16:18,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:18,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 07:16:18,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278077019] [2020-04-18 07:16:18,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 07:16:18,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:18,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 07:16:18,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 07:16:18,825 INFO L87 Difference]: Start difference. First operand 5573 states. Second operand 6 states. [2020-04-18 07:16:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:19,752 INFO L93 Difference]: Finished difference Result 8100 states and 22333 transitions. [2020-04-18 07:16:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 07:16:19,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-04-18 07:16:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:19,822 INFO L225 Difference]: With dead ends: 8100 [2020-04-18 07:16:19,822 INFO L226 Difference]: Without dead ends: 6751 [2020-04-18 07:16:19,825 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-04-18 07:16:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2020-04-18 07:16:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 5126. [2020-04-18 07:16:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-04-18 07:16:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 14055 transitions. [2020-04-18 07:16:20,226 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 14055 transitions. Word has length 44 [2020-04-18 07:16:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:20,226 INFO L479 AbstractCegarLoop]: Abstraction has 5126 states and 14055 transitions. [2020-04-18 07:16:20,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 07:16:20,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 14055 transitions. [2020-04-18 07:16:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 07:16:20,237 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:20,238 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:20,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1787160073, now seen corresponding path program 1 times [2020-04-18 07:16:20,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:20,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979991849] [2020-04-18 07:16:20,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:20,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979991849] [2020-04-18 07:16:20,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:20,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 07:16:20,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024650686] [2020-04-18 07:16:20,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 07:16:20,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:20,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 07:16:20,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 07:16:20,469 INFO L87 Difference]: Start difference. First operand 5126 states and 14055 transitions. Second operand 6 states. [2020-04-18 07:16:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:21,163 INFO L93 Difference]: Finished difference Result 7325 states and 19926 transitions. [2020-04-18 07:16:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 07:16:21,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-04-18 07:16:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:21,206 INFO L225 Difference]: With dead ends: 7325 [2020-04-18 07:16:21,206 INFO L226 Difference]: Without dead ends: 6148 [2020-04-18 07:16:21,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:16:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2020-04-18 07:16:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 5932. [2020-04-18 07:16:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2020-04-18 07:16:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 16300 transitions. [2020-04-18 07:16:21,405 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 16300 transitions. Word has length 50 [2020-04-18 07:16:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:21,406 INFO L479 AbstractCegarLoop]: Abstraction has 5932 states and 16300 transitions. [2020-04-18 07:16:21,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 07:16:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 16300 transitions. [2020-04-18 07:16:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-04-18 07:16:21,416 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:21,417 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:21,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:21,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash 588218236, now seen corresponding path program 1 times [2020-04-18 07:16:21,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:21,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144832537] [2020-04-18 07:16:21,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:21,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144832537] [2020-04-18 07:16:21,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:21,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 07:16:21,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519874530] [2020-04-18 07:16:21,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:16:21,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:21,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:16:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:16:21,603 INFO L87 Difference]: Start difference. First operand 5932 states and 16300 transitions. Second operand 5 states. [2020-04-18 07:16:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:21,695 INFO L93 Difference]: Finished difference Result 2080 states and 5512 transitions. [2020-04-18 07:16:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 07:16:21,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-04-18 07:16:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:21,708 INFO L225 Difference]: With dead ends: 2080 [2020-04-18 07:16:21,709 INFO L226 Difference]: Without dead ends: 2080 [2020-04-18 07:16:21,709 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:16:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-04-18 07:16:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2020-04-18 07:16:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2080 states. [2020-04-18 07:16:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5512 transitions. [2020-04-18 07:16:21,773 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5512 transitions. Word has length 56 [2020-04-18 07:16:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:21,777 INFO L479 AbstractCegarLoop]: Abstraction has 2080 states and 5512 transitions. [2020-04-18 07:16:21,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:16:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5512 transitions. [2020-04-18 07:16:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:21,787 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:21,787 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:21,787 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1531262921, now seen corresponding path program 1 times [2020-04-18 07:16:21,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405243671] [2020-04-18 07:16:21,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:23,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405243671] [2020-04-18 07:16:23,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:23,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:23,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902829735] [2020-04-18 07:16:23,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:23,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:23,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:23,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:23,552 INFO L87 Difference]: Start difference. First operand 2080 states and 5512 transitions. Second operand 19 states. [2020-04-18 07:16:24,794 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-04-18 07:16:24,988 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-04-18 07:16:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:26,022 INFO L93 Difference]: Finished difference Result 2950 states and 7349 transitions. [2020-04-18 07:16:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:16:26,029 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:16:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:26,047 INFO L225 Difference]: With dead ends: 2950 [2020-04-18 07:16:26,047 INFO L226 Difference]: Without dead ends: 2950 [2020-04-18 07:16:26,048 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:16:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-04-18 07:16:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2333. [2020-04-18 07:16:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-04-18 07:16:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 6054 transitions. [2020-04-18 07:16:26,121 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 6054 transitions. Word has length 86 [2020-04-18 07:16:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:26,122 INFO L479 AbstractCegarLoop]: Abstraction has 2333 states and 6054 transitions. [2020-04-18 07:16:26,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:16:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 6054 transitions. [2020-04-18 07:16:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:26,128 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:26,129 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:26,129 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1907224459, now seen corresponding path program 2 times [2020-04-18 07:16:26,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:26,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058735869] [2020-04-18 07:16:26,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:27,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058735869] [2020-04-18 07:16:27,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:27,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:27,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069555892] [2020-04-18 07:16:27,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:27,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:27,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:27,374 INFO L87 Difference]: Start difference. First operand 2333 states and 6054 transitions. Second operand 19 states. [2020-04-18 07:16:28,572 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-04-18 07:16:28,772 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-04-18 07:16:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:29,798 INFO L93 Difference]: Finished difference Result 3116 states and 7687 transitions. [2020-04-18 07:16:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:16:29,798 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:16:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:29,814 INFO L225 Difference]: With dead ends: 3116 [2020-04-18 07:16:29,814 INFO L226 Difference]: Without dead ends: 3116 [2020-04-18 07:16:29,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:16:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2020-04-18 07:16:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2333. [2020-04-18 07:16:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-04-18 07:16:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 6054 transitions. [2020-04-18 07:16:29,884 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 6054 transitions. Word has length 86 [2020-04-18 07:16:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:29,884 INFO L479 AbstractCegarLoop]: Abstraction has 2333 states and 6054 transitions. [2020-04-18 07:16:29,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:16:29,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 6054 transitions. [2020-04-18 07:16:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:29,891 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:29,891 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:29,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash 33878059, now seen corresponding path program 1 times [2020-04-18 07:16:29,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:29,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062815019] [2020-04-18 07:16:29,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:30,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062815019] [2020-04-18 07:16:30,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:30,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-04-18 07:16:30,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958339206] [2020-04-18 07:16:30,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 07:16:30,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:30,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 07:16:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:16:30,987 INFO L87 Difference]: Start difference. First operand 2333 states and 6054 transitions. Second operand 23 states. [2020-04-18 07:16:33,957 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-04-18 07:16:34,635 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-04-18 07:16:35,079 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-04-18 07:16:35,359 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:35,530 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:35,797 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-04-18 07:16:36,107 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:36,295 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:36,588 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-04-18 07:16:38,987 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-04-18 07:16:39,137 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 07:16:39,370 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 07:16:39,556 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-04-18 07:16:39,751 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:39,975 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-04-18 07:16:40,153 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-04-18 07:16:40,325 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:40,620 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:40,835 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:41,124 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-04-18 07:16:41,435 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-04-18 07:16:41,633 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-04-18 07:16:41,945 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-04-18 07:16:42,506 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:42,665 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-18 07:16:42,817 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-18 07:16:42,984 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:43,172 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-04-18 07:16:43,495 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-04-18 07:16:43,696 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-04-18 07:16:44,142 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-04-18 07:16:44,451 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-04-18 07:16:44,624 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-04-18 07:16:44,867 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-04-18 07:16:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:45,206 INFO L93 Difference]: Finished difference Result 5171 states and 13205 transitions. [2020-04-18 07:16:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-04-18 07:16:45,207 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-04-18 07:16:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:45,226 INFO L225 Difference]: With dead ends: 5171 [2020-04-18 07:16:45,226 INFO L226 Difference]: Without dead ends: 5041 [2020-04-18 07:16:45,229 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2925, Invalid=6581, Unknown=0, NotChecked=0, Total=9506 [2020-04-18 07:16:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2020-04-18 07:16:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 4035. [2020-04-18 07:16:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-04-18 07:16:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 10678 transitions. [2020-04-18 07:16:45,333 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 10678 transitions. Word has length 86 [2020-04-18 07:16:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:45,334 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 10678 transitions. [2020-04-18 07:16:45,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 07:16:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 10678 transitions. [2020-04-18 07:16:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:45,344 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:45,344 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:45,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:45,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1258105037, now seen corresponding path program 3 times [2020-04-18 07:16:45,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:45,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913374141] [2020-04-18 07:16:45,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:46,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913374141] [2020-04-18 07:16:46,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:46,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:46,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100938384] [2020-04-18 07:16:46,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:46,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:46,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:46,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:46,759 INFO L87 Difference]: Start difference. First operand 4035 states and 10678 transitions. Second operand 19 states. [2020-04-18 07:16:48,296 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-04-18 07:16:48,895 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-04-18 07:16:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:49,143 INFO L93 Difference]: Finished difference Result 5075 states and 13111 transitions. [2020-04-18 07:16:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 07:16:49,144 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:16:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:49,157 INFO L225 Difference]: With dead ends: 5075 [2020-04-18 07:16:49,157 INFO L226 Difference]: Without dead ends: 5075 [2020-04-18 07:16:49,158 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 07:16:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2020-04-18 07:16:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 4563. [2020-04-18 07:16:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2020-04-18 07:16:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12042 transitions. [2020-04-18 07:16:49,311 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12042 transitions. Word has length 86 [2020-04-18 07:16:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:49,312 INFO L479 AbstractCegarLoop]: Abstraction has 4563 states and 12042 transitions. [2020-04-18 07:16:49,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:16:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12042 transitions. [2020-04-18 07:16:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:49,328 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:49,328 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:49,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1836366221, now seen corresponding path program 4 times [2020-04-18 07:16:49,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:49,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447632049] [2020-04-18 07:16:49,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:50,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447632049] [2020-04-18 07:16:50,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:50,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:50,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964197380] [2020-04-18 07:16:50,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:50,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:50,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:50,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:50,435 INFO L87 Difference]: Start difference. First operand 4563 states and 12042 transitions. Second operand 19 states. [2020-04-18 07:16:52,511 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-04-18 07:16:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:52,895 INFO L93 Difference]: Finished difference Result 5446 states and 13853 transitions. [2020-04-18 07:16:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:16:52,896 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:16:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:52,905 INFO L225 Difference]: With dead ends: 5446 [2020-04-18 07:16:52,906 INFO L226 Difference]: Without dead ends: 5446 [2020-04-18 07:16:52,906 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:16:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2020-04-18 07:16:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 4563. [2020-04-18 07:16:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2020-04-18 07:16:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12042 transitions. [2020-04-18 07:16:53,020 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12042 transitions. Word has length 86 [2020-04-18 07:16:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:53,020 INFO L479 AbstractCegarLoop]: Abstraction has 4563 states and 12042 transitions. [2020-04-18 07:16:53,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:16:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12042 transitions. [2020-04-18 07:16:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:53,032 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:53,032 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:53,032 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash 765944389, now seen corresponding path program 5 times [2020-04-18 07:16:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:53,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799563701] [2020-04-18 07:16:53,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:54,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799563701] [2020-04-18 07:16:54,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:54,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:54,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552473564] [2020-04-18 07:16:54,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:54,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:54,047 INFO L87 Difference]: Start difference. First operand 4563 states and 12042 transitions. Second operand 19 states. [2020-04-18 07:16:55,240 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-04-18 07:16:55,426 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-04-18 07:16:56,369 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-04-18 07:16:56,561 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-04-18 07:16:56,781 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-04-18 07:16:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:56,820 INFO L93 Difference]: Finished difference Result 5731 states and 14516 transitions. [2020-04-18 07:16:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:16:56,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:16:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:56,835 INFO L225 Difference]: With dead ends: 5731 [2020-04-18 07:16:56,835 INFO L226 Difference]: Without dead ends: 5731 [2020-04-18 07:16:56,836 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:16:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2020-04-18 07:16:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 4563. [2020-04-18 07:16:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2020-04-18 07:16:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12042 transitions. [2020-04-18 07:16:56,994 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12042 transitions. Word has length 86 [2020-04-18 07:16:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:56,994 INFO L479 AbstractCegarLoop]: Abstraction has 4563 states and 12042 transitions. [2020-04-18 07:16:56,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:16:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12042 transitions. [2020-04-18 07:16:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:16:57,010 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:57,010 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:16:57,010 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:57,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1317732063, now seen corresponding path program 6 times [2020-04-18 07:16:57,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:57,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161777851] [2020-04-18 07:16:57,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:58,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161777851] [2020-04-18 07:16:58,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:16:58,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:16:58,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149628228] [2020-04-18 07:16:58,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:16:58,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:16:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:16:58,039 INFO L87 Difference]: Start difference. First operand 4563 states and 12042 transitions. Second operand 19 states. [2020-04-18 07:16:59,083 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-04-18 07:16:59,283 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-04-18 07:17:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:00,298 INFO L93 Difference]: Finished difference Result 5070 states and 13100 transitions. [2020-04-18 07:17:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 07:17:00,298 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:17:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:00,310 INFO L225 Difference]: With dead ends: 5070 [2020-04-18 07:17:00,310 INFO L226 Difference]: Without dead ends: 5070 [2020-04-18 07:17:00,311 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:17:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2020-04-18 07:17:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4318. [2020-04-18 07:17:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4318 states. [2020-04-18 07:17:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 11457 transitions. [2020-04-18 07:17:00,440 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 11457 transitions. Word has length 86 [2020-04-18 07:17:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:00,441 INFO L479 AbstractCegarLoop]: Abstraction has 4318 states and 11457 transitions. [2020-04-18 07:17:00,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:17:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 11457 transitions. [2020-04-18 07:17:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:00,459 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:00,459 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:00,459 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:00,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1017121035, now seen corresponding path program 7 times [2020-04-18 07:17:00,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:00,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142316153] [2020-04-18 07:17:00,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:02,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142316153] [2020-04-18 07:17:02,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:02,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:02,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053135353] [2020-04-18 07:17:02,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:02,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:02,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:02,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:02,169 INFO L87 Difference]: Start difference. First operand 4318 states and 11457 transitions. Second operand 25 states. [2020-04-18 07:17:02,966 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:17:03,223 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:03,478 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:03,799 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:04,106 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:05,031 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:17:05,318 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:17:05,680 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:06,012 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:06,367 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:07,021 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-04-18 07:17:07,301 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-04-18 07:17:07,578 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-04-18 07:17:07,859 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-04-18 07:17:08,111 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:17:08,387 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-18 07:17:08,658 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-18 07:17:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:08,670 INFO L93 Difference]: Finished difference Result 8383 states and 21530 transitions. [2020-04-18 07:17:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:17:08,671 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:08,681 INFO L225 Difference]: With dead ends: 8383 [2020-04-18 07:17:08,681 INFO L226 Difference]: Without dead ends: 8383 [2020-04-18 07:17:08,682 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=529, Invalid=1541, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:17:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8383 states. [2020-04-18 07:17:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8383 to 4594. [2020-04-18 07:17:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4594 states. [2020-04-18 07:17:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 12195 transitions. [2020-04-18 07:17:08,812 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 12195 transitions. Word has length 86 [2020-04-18 07:17:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:08,812 INFO L479 AbstractCegarLoop]: Abstraction has 4594 states and 12195 transitions. [2020-04-18 07:17:08,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 12195 transitions. [2020-04-18 07:17:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:08,823 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:08,823 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:08,824 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:08,824 INFO L82 PathProgramCache]: Analyzing trace with hash 662498285, now seen corresponding path program 8 times [2020-04-18 07:17:08,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:08,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786372373] [2020-04-18 07:17:08,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:10,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786372373] [2020-04-18 07:17:10,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:10,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:10,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984308732] [2020-04-18 07:17:10,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:10,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:10,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:10,464 INFO L87 Difference]: Start difference. First operand 4594 states and 12195 transitions. Second operand 25 states. [2020-04-18 07:17:11,472 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:11,688 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:11,998 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:12,293 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:12,613 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:17:13,515 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:17:13,844 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:14,173 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:14,540 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:15,217 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-04-18 07:17:15,498 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-04-18 07:17:15,786 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-18 07:17:16,084 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-04-18 07:17:16,341 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:17:16,618 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-04-18 07:17:16,916 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-18 07:17:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:16,935 INFO L93 Difference]: Finished difference Result 8428 states and 21641 transitions. [2020-04-18 07:17:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:17:16,936 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:16,943 INFO L225 Difference]: With dead ends: 8428 [2020-04-18 07:17:16,943 INFO L226 Difference]: Without dead ends: 8428 [2020-04-18 07:17:16,944 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=544, Invalid=1526, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:17:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8428 states. [2020-04-18 07:17:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8428 to 4726. [2020-04-18 07:17:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4726 states. [2020-04-18 07:17:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 12591 transitions. [2020-04-18 07:17:17,069 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 12591 transitions. Word has length 86 [2020-04-18 07:17:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:17,069 INFO L479 AbstractCegarLoop]: Abstraction has 4726 states and 12591 transitions. [2020-04-18 07:17:17,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 12591 transitions. [2020-04-18 07:17:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:17,091 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:17,091 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:17,092 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2010011179, now seen corresponding path program 9 times [2020-04-18 07:17:17,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:17,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083396768] [2020-04-18 07:17:17,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:18,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083396768] [2020-04-18 07:17:18,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:18,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:18,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313240102] [2020-04-18 07:17:18,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:18,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:18,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:18,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:18,927 INFO L87 Difference]: Start difference. First operand 4726 states and 12591 transitions. Second operand 25 states. [2020-04-18 07:17:19,938 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:20,155 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:20,482 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:20,801 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:21,118 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:17:21,595 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:17:21,974 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:17:22,369 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-04-18 07:17:23,354 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-18 07:17:23,957 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:17:24,276 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:17:24,612 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-04-18 07:17:24,940 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-04-18 07:17:25,273 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:25,295 INFO L93 Difference]: Finished difference Result 7849 states and 20402 transitions. [2020-04-18 07:17:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 07:17:25,296 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:25,304 INFO L225 Difference]: With dead ends: 7849 [2020-04-18 07:17:25,304 INFO L226 Difference]: Without dead ends: 7849 [2020-04-18 07:17:25,305 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=523, Invalid=1369, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 07:17:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2020-04-18 07:17:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 5254. [2020-04-18 07:17:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2020-04-18 07:17:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 14109 transitions. [2020-04-18 07:17:25,419 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 14109 transitions. Word has length 86 [2020-04-18 07:17:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:25,420 INFO L479 AbstractCegarLoop]: Abstraction has 5254 states and 14109 transitions. [2020-04-18 07:17:25,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 14109 transitions. [2020-04-18 07:17:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:25,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:25,432 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:25,432 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash -366399279, now seen corresponding path program 10 times [2020-04-18 07:17:25,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:25,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155912702] [2020-04-18 07:17:25,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:27,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155912702] [2020-04-18 07:17:27,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:27,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:27,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608741694] [2020-04-18 07:17:27,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:27,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:27,330 INFO L87 Difference]: Start difference. First operand 5254 states and 14109 transitions. Second operand 25 states. [2020-04-18 07:17:28,439 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:28,663 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:29,006 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:29,310 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:29,640 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:17:30,151 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:17:30,547 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:17:30,958 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-18 07:17:31,987 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:32,312 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:33,040 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-04-18 07:17:33,373 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-04-18 07:17:33,717 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-04-18 07:17:34,049 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:17:34,389 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:17:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:34,406 INFO L93 Difference]: Finished difference Result 7438 states and 19307 transitions. [2020-04-18 07:17:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 07:17:34,407 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:34,415 INFO L225 Difference]: With dead ends: 7438 [2020-04-18 07:17:34,415 INFO L226 Difference]: Without dead ends: 7438 [2020-04-18 07:17:34,416 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=541, Invalid=1439, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 07:17:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7438 states. [2020-04-18 07:17:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7438 to 5254. [2020-04-18 07:17:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2020-04-18 07:17:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 14109 transitions. [2020-04-18 07:17:34,524 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 14109 transitions. Word has length 86 [2020-04-18 07:17:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:34,524 INFO L479 AbstractCegarLoop]: Abstraction has 5254 states and 14109 transitions. [2020-04-18 07:17:34,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 14109 transitions. [2020-04-18 07:17:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:34,541 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:34,541 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:34,542 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:34,542 INFO L82 PathProgramCache]: Analyzing trace with hash 525276067, now seen corresponding path program 11 times [2020-04-18 07:17:34,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:34,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690309405] [2020-04-18 07:17:34,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:36,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690309405] [2020-04-18 07:17:36,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:36,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:36,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322527670] [2020-04-18 07:17:36,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:36,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:36,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:36,229 INFO L87 Difference]: Start difference. First operand 5254 states and 14109 transitions. Second operand 25 states. [2020-04-18 07:17:36,998 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:17:37,258 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:37,478 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:37,782 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:38,075 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:38,395 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:17:39,005 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:17:39,962 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:40,277 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:40,660 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:41,312 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-18 07:17:41,625 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-04-18 07:17:41,943 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-04-18 07:17:42,261 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-04-18 07:17:42,516 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:42,835 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-04-18 07:17:43,165 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-04-18 07:17:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:43,191 INFO L93 Difference]: Finished difference Result 7643 states and 19736 transitions. [2020-04-18 07:17:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:17:43,192 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:43,200 INFO L225 Difference]: With dead ends: 7643 [2020-04-18 07:17:43,201 INFO L226 Difference]: Without dead ends: 7643 [2020-04-18 07:17:43,202 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=559, Invalid=1511, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:17:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2020-04-18 07:17:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 5254. [2020-04-18 07:17:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2020-04-18 07:17:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 14109 transitions. [2020-04-18 07:17:43,302 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 14109 transitions. Word has length 86 [2020-04-18 07:17:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:43,302 INFO L479 AbstractCegarLoop]: Abstraction has 5254 states and 14109 transitions. [2020-04-18 07:17:43,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 14109 transitions. [2020-04-18 07:17:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:43,313 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:43,313 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:43,313 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:43,313 INFO L82 PathProgramCache]: Analyzing trace with hash -403905867, now seen corresponding path program 12 times [2020-04-18 07:17:43,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:43,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128301306] [2020-04-18 07:17:43,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:44,649 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-04-18 07:17:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:45,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128301306] [2020-04-18 07:17:45,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:45,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:45,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891441814] [2020-04-18 07:17:45,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:45,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:45,385 INFO L87 Difference]: Start difference. First operand 5254 states and 14109 transitions. Second operand 25 states. [2020-04-18 07:17:46,469 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:46,689 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-04-18 07:17:47,007 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:47,867 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:17:48,144 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:17:48,449 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:17:48,846 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:49,185 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:49,570 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:50,220 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-04-18 07:17:50,465 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-04-18 07:17:50,726 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-04-18 07:17:50,987 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-04-18 07:17:51,188 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:17:51,434 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-04-18 07:17:51,703 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-04-18 07:17:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:51,725 INFO L93 Difference]: Finished difference Result 7181 states and 18752 transitions. [2020-04-18 07:17:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:17:51,726 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:51,732 INFO L225 Difference]: With dead ends: 7181 [2020-04-18 07:17:51,732 INFO L226 Difference]: Without dead ends: 7181 [2020-04-18 07:17:51,733 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=514, Invalid=1556, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:17:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7181 states. [2020-04-18 07:17:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7181 to 5266. [2020-04-18 07:17:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5266 states. [2020-04-18 07:17:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 14139 transitions. [2020-04-18 07:17:51,814 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 14139 transitions. Word has length 86 [2020-04-18 07:17:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:51,815 INFO L479 AbstractCegarLoop]: Abstraction has 5266 states and 14139 transitions. [2020-04-18 07:17:51,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 14139 transitions. [2020-04-18 07:17:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:51,826 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:51,826 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:51,826 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1365191907, now seen corresponding path program 13 times [2020-04-18 07:17:51,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:51,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153551782] [2020-04-18 07:17:51,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:53,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153551782] [2020-04-18 07:17:53,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:17:53,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:17:53,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644863344] [2020-04-18 07:17:53,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:17:53,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:53,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:17:53,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:17:53,389 INFO L87 Difference]: Start difference. First operand 5266 states and 14139 transitions. Second operand 25 states. [2020-04-18 07:17:54,393 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:17:54,668 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:17:54,901 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:17:55,213 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:17:56,062 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:17:56,342 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:17:56,692 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:17:57,002 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:17:57,348 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:17:57,961 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-04-18 07:17:58,216 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-04-18 07:17:58,478 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-04-18 07:17:58,758 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-04-18 07:17:58,998 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:17:59,277 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-18 07:17:59,544 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-18 07:17:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:59,560 INFO L93 Difference]: Finished difference Result 13750 states and 35737 transitions. [2020-04-18 07:17:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:17:59,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:17:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:59,574 INFO L225 Difference]: With dead ends: 13750 [2020-04-18 07:17:59,574 INFO L226 Difference]: Without dead ends: 13750 [2020-04-18 07:17:59,575 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=528, Invalid=1542, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:17:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13750 states. [2020-04-18 07:17:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13750 to 5420. [2020-04-18 07:17:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5420 states. [2020-04-18 07:17:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 14601 transitions. [2020-04-18 07:17:59,669 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 14601 transitions. Word has length 86 [2020-04-18 07:17:59,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:59,670 INFO L479 AbstractCegarLoop]: Abstraction has 5420 states and 14601 transitions. [2020-04-18 07:17:59,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:17:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 14601 transitions. [2020-04-18 07:17:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:17:59,676 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:59,676 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:17:59,676 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1010569157, now seen corresponding path program 14 times [2020-04-18 07:17:59,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:59,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851897896] [2020-04-18 07:17:59,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:01,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851897896] [2020-04-18 07:18:01,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:01,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:01,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810546415] [2020-04-18 07:18:01,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:01,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:01,232 INFO L87 Difference]: Start difference. First operand 5420 states and 14601 transitions. Second operand 25 states. [2020-04-18 07:18:02,009 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:18:02,265 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:02,558 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:02,797 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:18:03,124 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:03,454 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:18:04,484 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:04,810 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:05,128 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:05,487 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:06,199 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-04-18 07:18:06,478 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-04-18 07:18:06,764 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-18 07:18:07,060 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-04-18 07:18:07,324 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:07,596 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-04-18 07:18:07,897 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-18 07:18:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:07,916 INFO L93 Difference]: Finished difference Result 13795 states and 35848 transitions. [2020-04-18 07:18:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:18:07,917 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:07,931 INFO L225 Difference]: With dead ends: 13795 [2020-04-18 07:18:07,932 INFO L226 Difference]: Without dead ends: 13795 [2020-04-18 07:18:07,933 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:18:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13795 states. [2020-04-18 07:18:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13795 to 5552. [2020-04-18 07:18:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5552 states. [2020-04-18 07:18:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 14997 transitions. [2020-04-18 07:18:08,039 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 14997 transitions. Word has length 86 [2020-04-18 07:18:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:08,039 INFO L479 AbstractCegarLoop]: Abstraction has 5552 states and 14997 transitions. [2020-04-18 07:18:08,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 14997 transitions. [2020-04-18 07:18:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:08,045 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:08,045 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:08,045 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:08,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:08,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1936885245, now seen corresponding path program 15 times [2020-04-18 07:18:08,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:08,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954815219] [2020-04-18 07:18:08,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:09,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954815219] [2020-04-18 07:18:09,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:09,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:09,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255548468] [2020-04-18 07:18:09,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:09,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:09,884 INFO L87 Difference]: Start difference. First operand 5552 states and 14997 transitions. Second operand 25 states. [2020-04-18 07:18:10,687 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:18:10,958 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:11,257 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:11,503 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:18:11,820 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:12,148 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:18:12,641 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:18:13,025 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:18:13,425 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-04-18 07:18:14,417 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-18 07:18:15,053 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:18:15,380 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:18:15,712 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-04-18 07:18:16,038 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-04-18 07:18:16,370 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:16,387 INFO L93 Difference]: Finished difference Result 13216 states and 34609 transitions. [2020-04-18 07:18:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 07:18:16,387 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:16,399 INFO L225 Difference]: With dead ends: 13216 [2020-04-18 07:18:16,399 INFO L226 Difference]: Without dead ends: 13216 [2020-04-18 07:18:16,400 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=522, Invalid=1370, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 07:18:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2020-04-18 07:18:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 5684. [2020-04-18 07:18:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5684 states. [2020-04-18 07:18:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 15393 transitions. [2020-04-18 07:18:16,497 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 15393 transitions. Word has length 86 [2020-04-18 07:18:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:16,498 INFO L479 AbstractCegarLoop]: Abstraction has 5684 states and 15393 transitions. [2020-04-18 07:18:16,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 15393 transitions. [2020-04-18 07:18:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:16,503 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:16,504 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:16,504 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:16,504 INFO L82 PathProgramCache]: Analyzing trace with hash -18328407, now seen corresponding path program 16 times [2020-04-18 07:18:16,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:16,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610853842] [2020-04-18 07:18:16,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:18,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610853842] [2020-04-18 07:18:18,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:18,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:18,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727061270] [2020-04-18 07:18:18,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:18,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:18,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:18,386 INFO L87 Difference]: Start difference. First operand 5684 states and 15393 transitions. Second operand 25 states. [2020-04-18 07:18:19,152 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:18:19,396 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:19,663 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:19,893 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:18:20,208 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:20,532 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:18:21,023 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:18:21,398 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:18:21,789 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-18 07:18:22,624 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:22,939 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:23,611 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-04-18 07:18:23,974 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-04-18 07:18:24,325 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-04-18 07:18:24,660 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:18:24,987 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:18:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:25,002 INFO L93 Difference]: Finished difference Result 12805 states and 33514 transitions. [2020-04-18 07:18:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 07:18:25,003 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:25,014 INFO L225 Difference]: With dead ends: 12805 [2020-04-18 07:18:25,015 INFO L226 Difference]: Without dead ends: 12805 [2020-04-18 07:18:25,015 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=540, Invalid=1440, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 07:18:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2020-04-18 07:18:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 5618. [2020-04-18 07:18:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5618 states. [2020-04-18 07:18:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 15195 transitions. [2020-04-18 07:18:25,105 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 15195 transitions. Word has length 86 [2020-04-18 07:18:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:25,106 INFO L479 AbstractCegarLoop]: Abstraction has 5618 states and 15195 transitions. [2020-04-18 07:18:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 15195 transitions. [2020-04-18 07:18:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:25,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:25,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:25,114 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash 873346939, now seen corresponding path program 17 times [2020-04-18 07:18:25,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:25,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425824097] [2020-04-18 07:18:25,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:27,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425824097] [2020-04-18 07:18:27,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:27,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:27,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706508563] [2020-04-18 07:18:27,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:27,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:27,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:27,025 INFO L87 Difference]: Start difference. First operand 5618 states and 15195 transitions. Second operand 25 states. [2020-04-18 07:18:28,129 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:28,427 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:28,671 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:18:29,002 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:29,380 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:18:29,892 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:18:30,875 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:31,211 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:31,586 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:32,373 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-18 07:18:32,695 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-04-18 07:18:33,000 WARN L192 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-04-18 07:18:33,324 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-04-18 07:18:33,594 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:33,903 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-04-18 07:18:34,238 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-04-18 07:18:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:34,262 INFO L93 Difference]: Finished difference Result 13010 states and 33943 transitions. [2020-04-18 07:18:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:18:34,263 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:34,277 INFO L225 Difference]: With dead ends: 13010 [2020-04-18 07:18:34,277 INFO L226 Difference]: Without dead ends: 13010 [2020-04-18 07:18:34,278 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=558, Invalid=1512, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:18:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13010 states. [2020-04-18 07:18:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13010 to 5354. [2020-04-18 07:18:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5354 states. [2020-04-18 07:18:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 14403 transitions. [2020-04-18 07:18:34,434 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 14403 transitions. Word has length 86 [2020-04-18 07:18:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:34,434 INFO L479 AbstractCegarLoop]: Abstraction has 5354 states and 14403 transitions. [2020-04-18 07:18:34,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 14403 transitions. [2020-04-18 07:18:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:34,439 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:34,439 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:34,439 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash -55834995, now seen corresponding path program 18 times [2020-04-18 07:18:34,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:34,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442768939] [2020-04-18 07:18:34,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:36,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442768939] [2020-04-18 07:18:36,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:36,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:36,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591799036] [2020-04-18 07:18:36,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:36,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:36,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:36,009 INFO L87 Difference]: Start difference. First operand 5354 states and 14403 transitions. Second operand 25 states. [2020-04-18 07:18:36,993 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:37,270 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:37,499 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-18 07:18:38,320 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:18:38,584 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:18:38,882 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:39,266 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:39,587 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:39,970 WARN L192 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:40,595 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-04-18 07:18:40,857 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-04-18 07:18:41,091 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-04-18 07:18:41,347 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-04-18 07:18:41,544 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:18:41,796 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-04-18 07:18:42,082 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-04-18 07:18:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:42,105 INFO L93 Difference]: Finished difference Result 11915 states and 31114 transitions. [2020-04-18 07:18:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:18:42,106 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:42,117 INFO L225 Difference]: With dead ends: 11915 [2020-04-18 07:18:42,117 INFO L226 Difference]: Without dead ends: 11915 [2020-04-18 07:18:42,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=513, Invalid=1557, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:18:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2020-04-18 07:18:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 5288. [2020-04-18 07:18:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-04-18 07:18:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 14205 transitions. [2020-04-18 07:18:42,215 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 14205 transitions. Word has length 86 [2020-04-18 07:18:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:42,216 INFO L479 AbstractCegarLoop]: Abstraction has 5288 states and 14205 transitions. [2020-04-18 07:18:42,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 14205 transitions. [2020-04-18 07:18:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:42,223 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:42,223 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:42,223 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1694489007, now seen corresponding path program 19 times [2020-04-18 07:18:42,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:42,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027650401] [2020-04-18 07:18:42,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:44,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027650401] [2020-04-18 07:18:44,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:44,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:44,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427229505] [2020-04-18 07:18:44,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:44,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:44,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:44,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:44,123 INFO L87 Difference]: Start difference. First operand 5288 states and 14205 transitions. Second operand 25 states. [2020-04-18 07:18:44,976 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:18:45,239 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:45,540 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:45,832 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:18:46,111 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:47,143 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:18:47,436 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:47,809 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:48,155 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:48,502 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:49,228 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-04-18 07:18:49,490 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-04-18 07:18:49,750 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-04-18 07:18:50,028 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-04-18 07:18:50,265 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 07:18:50,515 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-18 07:18:50,801 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-18 07:18:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:50,819 INFO L93 Difference]: Finished difference Result 11098 states and 28663 transitions. [2020-04-18 07:18:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:18:50,819 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:50,831 INFO L225 Difference]: With dead ends: 11098 [2020-04-18 07:18:50,831 INFO L226 Difference]: Without dead ends: 11098 [2020-04-18 07:18:50,832 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=528, Invalid=1542, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:18:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2020-04-18 07:18:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 5376. [2020-04-18 07:18:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5376 states. [2020-04-18 07:18:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 14469 transitions. [2020-04-18 07:18:50,931 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 14469 transitions. Word has length 86 [2020-04-18 07:18:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:50,931 INFO L479 AbstractCegarLoop]: Abstraction has 5376 states and 14469 transitions. [2020-04-18 07:18:50,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 14469 transitions. [2020-04-18 07:18:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:50,980 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:50,980 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:50,981 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1339866257, now seen corresponding path program 20 times [2020-04-18 07:18:50,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:50,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926326717] [2020-04-18 07:18:50,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:52,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926326717] [2020-04-18 07:18:52,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:18:52,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:18:52,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477745142] [2020-04-18 07:18:52,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:18:52,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:18:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:18:52,700 INFO L87 Difference]: Start difference. First operand 5376 states and 14469 transitions. Second operand 25 states. [2020-04-18 07:18:53,810 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:18:54,088 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:18:54,337 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:18:54,604 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:18:54,934 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:18:55,837 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:56,158 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:18:56,473 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:18:56,812 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:18:57,541 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-04-18 07:18:57,834 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-04-18 07:18:58,112 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-18 07:18:58,414 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-04-18 07:18:58,665 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:18:58,947 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-04-18 07:18:59,257 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-18 07:18:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:59,273 INFO L93 Difference]: Finished difference Result 13727 states and 35488 transitions. [2020-04-18 07:18:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:18:59,273 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:18:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:59,285 INFO L225 Difference]: With dead ends: 13727 [2020-04-18 07:18:59,285 INFO L226 Difference]: Without dead ends: 13727 [2020-04-18 07:18:59,286 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:18:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13727 states. [2020-04-18 07:18:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13727 to 5508. [2020-04-18 07:18:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5508 states. [2020-04-18 07:18:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 14865 transitions. [2020-04-18 07:18:59,396 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 14865 transitions. Word has length 86 [2020-04-18 07:18:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:59,396 INFO L479 AbstractCegarLoop]: Abstraction has 5508 states and 14865 transitions. [2020-04-18 07:18:59,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:18:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 14865 transitions. [2020-04-18 07:18:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:18:59,404 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:59,404 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:18:59,404 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1607588145, now seen corresponding path program 21 times [2020-04-18 07:18:59,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:59,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220052531] [2020-04-18 07:18:59,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:01,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220052531] [2020-04-18 07:19:01,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:01,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:01,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578307740] [2020-04-18 07:19:01,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:01,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:01,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:01,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:01,191 INFO L87 Difference]: Start difference. First operand 5508 states and 14865 transitions. Second operand 25 states. [2020-04-18 07:19:02,018 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:19:02,292 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:19:02,588 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:19:02,879 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:19:03,157 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:19:03,523 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:19:04,029 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:19:04,418 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:19:04,829 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-04-18 07:19:05,873 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-18 07:19:06,557 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:19:06,875 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:19:07,224 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-04-18 07:19:07,559 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-04-18 07:19:07,885 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:19:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:07,903 INFO L93 Difference]: Finished difference Result 13148 states and 34249 transitions. [2020-04-18 07:19:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 07:19:07,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:07,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:07,918 INFO L225 Difference]: With dead ends: 13148 [2020-04-18 07:19:07,918 INFO L226 Difference]: Without dead ends: 13148 [2020-04-18 07:19:07,919 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=522, Invalid=1370, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 07:19:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13148 states. [2020-04-18 07:19:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13148 to 5640. [2020-04-18 07:19:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5640 states. [2020-04-18 07:19:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 15261 transitions. [2020-04-18 07:19:08,026 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 15261 transitions. Word has length 86 [2020-04-18 07:19:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:08,026 INFO L479 AbstractCegarLoop]: Abstraction has 5640 states and 15261 transitions. [2020-04-18 07:19:08,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 15261 transitions. [2020-04-18 07:19:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:08,033 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:08,033 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:08,033 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:08,034 INFO L82 PathProgramCache]: Analyzing trace with hash 310968693, now seen corresponding path program 22 times [2020-04-18 07:19:08,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:08,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477892813] [2020-04-18 07:19:08,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:09,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477892813] [2020-04-18 07:19:09,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:09,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:09,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826732671] [2020-04-18 07:19:09,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:09,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:09,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:09,629 INFO L87 Difference]: Start difference. First operand 5640 states and 15261 transitions. Second operand 25 states. [2020-04-18 07:19:10,654 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:19:10,923 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:19:11,169 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:19:11,441 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:19:11,778 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:19:12,244 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:19:12,610 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:19:12,993 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-18 07:19:13,836 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:19:14,154 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:19:14,894 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-04-18 07:19:15,216 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-04-18 07:19:15,554 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-04-18 07:19:15,874 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:19:16,231 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:19:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:16,249 INFO L93 Difference]: Finished difference Result 12737 states and 33154 transitions. [2020-04-18 07:19:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 07:19:16,250 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:16,261 INFO L225 Difference]: With dead ends: 12737 [2020-04-18 07:19:16,261 INFO L226 Difference]: Without dead ends: 12737 [2020-04-18 07:19:16,262 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=540, Invalid=1440, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 07:19:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2020-04-18 07:19:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 5574. [2020-04-18 07:19:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5574 states. [2020-04-18 07:19:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15063 transitions. [2020-04-18 07:19:16,360 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15063 transitions. Word has length 86 [2020-04-18 07:19:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:16,361 INFO L479 AbstractCegarLoop]: Abstraction has 5574 states and 15063 transitions. [2020-04-18 07:19:16,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15063 transitions. [2020-04-18 07:19:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:16,367 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:16,367 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:16,367 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1202644039, now seen corresponding path program 23 times [2020-04-18 07:19:16,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:16,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318939107] [2020-04-18 07:19:16,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:17,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318939107] [2020-04-18 07:19:17,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:17,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:17,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79067234] [2020-04-18 07:19:17,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:17,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:17,890 INFO L87 Difference]: Start difference. First operand 5574 states and 15063 transitions. Second operand 25 states. [2020-04-18 07:19:18,954 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:19:19,227 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:19:19,473 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:19:19,744 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-04-18 07:19:20,095 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:19:20,551 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:19:21,371 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:19:21,675 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:19:22,018 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:19:22,696 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-18 07:19:23,020 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-04-18 07:19:23,325 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-04-18 07:19:23,646 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-04-18 07:19:23,926 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:19:24,239 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-04-18 07:19:24,607 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-04-18 07:19:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:24,633 INFO L93 Difference]: Finished difference Result 12942 states and 33583 transitions. [2020-04-18 07:19:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:19:24,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:24,647 INFO L225 Difference]: With dead ends: 12942 [2020-04-18 07:19:24,648 INFO L226 Difference]: Without dead ends: 12942 [2020-04-18 07:19:24,648 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=558, Invalid=1512, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:19:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12942 states. [2020-04-18 07:19:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12942 to 5310. [2020-04-18 07:19:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5310 states. [2020-04-18 07:19:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 14271 transitions. [2020-04-18 07:19:24,748 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 14271 transitions. Word has length 86 [2020-04-18 07:19:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:24,748 INFO L479 AbstractCegarLoop]: Abstraction has 5310 states and 14271 transitions. [2020-04-18 07:19:24,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 14271 transitions. [2020-04-18 07:19:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:24,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:24,754 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:24,754 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1959325003, now seen corresponding path program 24 times [2020-04-18 07:19:24,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:24,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347756799] [2020-04-18 07:19:24,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:26,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347756799] [2020-04-18 07:19:26,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:26,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:26,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686303669] [2020-04-18 07:19:26,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:26,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:26,411 INFO L87 Difference]: Start difference. First operand 5310 states and 14271 transitions. Second operand 25 states. [2020-04-18 07:19:27,175 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-04-18 07:19:27,431 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:19:27,719 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:19:27,977 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:19:28,737 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-18 07:19:28,974 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-04-18 07:19:29,281 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-04-18 07:19:29,666 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:19:30,008 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-04-18 07:19:30,371 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-04-18 07:19:30,974 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:19:31,225 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-04-18 07:19:31,458 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-04-18 07:19:31,762 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-04-18 07:19:31,957 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-18 07:19:32,198 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-04-18 07:19:32,461 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-04-18 07:19:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:32,480 INFO L93 Difference]: Finished difference Result 10246 states and 26319 transitions. [2020-04-18 07:19:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:19:32,480 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:32,489 INFO L225 Difference]: With dead ends: 10246 [2020-04-18 07:19:32,489 INFO L226 Difference]: Without dead ends: 10246 [2020-04-18 07:19:32,489 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=513, Invalid=1557, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:19:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2020-04-18 07:19:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 5314. [2020-04-18 07:19:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5314 states. [2020-04-18 07:19:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 14281 transitions. [2020-04-18 07:19:32,570 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 14281 transitions. Word has length 86 [2020-04-18 07:19:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:32,571 INFO L479 AbstractCegarLoop]: Abstraction has 5314 states and 14281 transitions. [2020-04-18 07:19:32,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 14281 transitions. [2020-04-18 07:19:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:32,575 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:32,575 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:32,576 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2019758763, now seen corresponding path program 25 times [2020-04-18 07:19:32,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:32,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569531888] [2020-04-18 07:19:32,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:34,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569531888] [2020-04-18 07:19:34,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:34,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:34,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531350897] [2020-04-18 07:19:34,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:34,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:34,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:34,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:34,133 INFO L87 Difference]: Start difference. First operand 5314 states and 14281 transitions. Second operand 25 states. [2020-04-18 07:19:35,210 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:19:35,507 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:19:35,764 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:19:36,660 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-18 07:19:36,937 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-04-18 07:19:37,226 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-04-18 07:19:37,699 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:19:38,053 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-04-18 07:19:38,425 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-04-18 07:19:39,143 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-04-18 07:19:39,399 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-04-18 07:19:39,633 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-04-18 07:19:39,886 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-04-18 07:19:40,087 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-18 07:19:40,330 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-04-18 07:19:40,595 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-04-18 07:19:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:40,613 INFO L93 Difference]: Finished difference Result 10558 states and 26995 transitions. [2020-04-18 07:19:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:19:40,613 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:40,624 INFO L225 Difference]: With dead ends: 10558 [2020-04-18 07:19:40,624 INFO L226 Difference]: Without dead ends: 10558 [2020-04-18 07:19:40,624 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=513, Invalid=1557, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:19:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10558 states. [2020-04-18 07:19:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10558 to 5322. [2020-04-18 07:19:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5322 states. [2020-04-18 07:19:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 14301 transitions. [2020-04-18 07:19:40,714 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 14301 transitions. Word has length 86 [2020-04-18 07:19:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:40,714 INFO L479 AbstractCegarLoop]: Abstraction has 5322 states and 14301 transitions. [2020-04-18 07:19:40,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 14301 transitions. [2020-04-18 07:19:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:40,719 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:40,719 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:40,719 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash -278730879, now seen corresponding path program 26 times [2020-04-18 07:19:40,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:40,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475095392] [2020-04-18 07:19:40,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:41,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475095392] [2020-04-18 07:19:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-04-18 07:19:41,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079010049] [2020-04-18 07:19:41,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 07:19:41,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 07:19:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:19:41,576 INFO L87 Difference]: Start difference. First operand 5322 states and 14301 transitions. Second operand 19 states. [2020-04-18 07:19:42,863 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-04-18 07:19:43,060 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-04-18 07:19:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:44,132 INFO L93 Difference]: Finished difference Result 7022 states and 17917 transitions. [2020-04-18 07:19:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:19:44,133 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-04-18 07:19:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:44,140 INFO L225 Difference]: With dead ends: 7022 [2020-04-18 07:19:44,140 INFO L226 Difference]: Without dead ends: 7022 [2020-04-18 07:19:44,140 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:19:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2020-04-18 07:19:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 5406. [2020-04-18 07:19:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5406 states. [2020-04-18 07:19:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 14505 transitions. [2020-04-18 07:19:44,217 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 14505 transitions. Word has length 86 [2020-04-18 07:19:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:44,217 INFO L479 AbstractCegarLoop]: Abstraction has 5406 states and 14505 transitions. [2020-04-18 07:19:44,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 07:19:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 14505 transitions. [2020-04-18 07:19:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:44,221 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:44,222 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:44,222 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash 62879683, now seen corresponding path program 27 times [2020-04-18 07:19:44,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:44,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563015704] [2020-04-18 07:19:44,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:45,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563015704] [2020-04-18 07:19:45,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:45,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:45,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628353513] [2020-04-18 07:19:45,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:45,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:45,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:45,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:45,849 INFO L87 Difference]: Start difference. First operand 5406 states and 14505 transitions. Second operand 25 states. [2020-04-18 07:19:46,672 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-04-18 07:19:46,937 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-04-18 07:19:47,228 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-04-18 07:19:47,488 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-04-18 07:19:48,310 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-04-18 07:19:48,687 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-04-18 07:19:49,055 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-18 07:19:49,366 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-04-18 07:19:49,799 WARN L192 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-04-18 07:19:50,195 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-04-18 07:19:50,825 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-04-18 07:19:51,085 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-04-18 07:19:51,345 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-04-18 07:19:51,612 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-04-18 07:19:51,833 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-04-18 07:19:52,090 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-04-18 07:19:52,354 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-04-18 07:19:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:19:52,373 INFO L93 Difference]: Finished difference Result 10434 states and 26763 transitions. [2020-04-18 07:19:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:19:52,373 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:19:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:19:52,383 INFO L225 Difference]: With dead ends: 10434 [2020-04-18 07:19:52,383 INFO L226 Difference]: Without dead ends: 10434 [2020-04-18 07:19:52,384 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:19:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2020-04-18 07:19:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 5422. [2020-04-18 07:19:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-04-18 07:19:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 14545 transitions. [2020-04-18 07:19:52,479 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 14545 transitions. Word has length 86 [2020-04-18 07:19:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:19:52,479 INFO L479 AbstractCegarLoop]: Abstraction has 5422 states and 14545 transitions. [2020-04-18 07:19:52,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:19:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 14545 transitions. [2020-04-18 07:19:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:19:52,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:19:52,484 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:19:52,484 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:19:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:19:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash 778022059, now seen corresponding path program 28 times [2020-04-18 07:19:52,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:19:52,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204554454] [2020-04-18 07:19:52,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:19:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:19:53,058 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-04-18 07:19:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:19:54,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204554454] [2020-04-18 07:19:54,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:19:54,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:19:54,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458748359] [2020-04-18 07:19:54,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:19:54,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:19:54,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:19:54,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:19:54,461 INFO L87 Difference]: Start difference. First operand 5422 states and 14545 transitions. Second operand 25 states. [2020-04-18 07:19:55,281 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-04-18 07:19:55,550 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-04-18 07:19:55,837 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-04-18 07:19:56,147 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-04-18 07:19:56,976 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-04-18 07:19:57,243 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-04-18 07:19:57,570 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-18 07:19:57,894 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-04-18 07:19:58,255 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-04-18 07:19:58,559 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-04-18 07:19:58,938 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-04-18 07:19:59,689 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-04-18 07:19:59,965 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-04-18 07:20:00,210 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-04-18 07:20:00,473 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-04-18 07:20:00,688 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-04-18 07:20:00,938 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-04-18 07:20:01,206 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-04-18 07:20:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:20:01,223 INFO L93 Difference]: Finished difference Result 10645 states and 27198 transitions. [2020-04-18 07:20:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 07:20:01,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:20:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:20:01,235 INFO L225 Difference]: With dead ends: 10645 [2020-04-18 07:20:01,235 INFO L226 Difference]: Without dead ends: 10645 [2020-04-18 07:20:01,236 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=545, Invalid=1617, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 07:20:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10645 states. [2020-04-18 07:20:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10645 to 5422. [2020-04-18 07:20:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-04-18 07:20:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 14545 transitions. [2020-04-18 07:20:01,323 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 14545 transitions. Word has length 86 [2020-04-18 07:20:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:20:01,323 INFO L479 AbstractCegarLoop]: Abstraction has 5422 states and 14545 transitions. [2020-04-18 07:20:01,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:20:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 14545 transitions. [2020-04-18 07:20:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:20:01,328 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:20:01,328 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:20:01,328 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:20:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:20:01,328 INFO L82 PathProgramCache]: Analyzing trace with hash 164055275, now seen corresponding path program 29 times [2020-04-18 07:20:01,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:20:01,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049266460] [2020-04-18 07:20:01,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:20:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:20:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:20:03,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049266460] [2020-04-18 07:20:03,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:20:03,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:20:03,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400763676] [2020-04-18 07:20:03,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:20:03,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:20:03,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:20:03,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:20:03,178 INFO L87 Difference]: Start difference. First operand 5422 states and 14545 transitions. Second operand 25 states. [2020-04-18 07:20:04,262 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:20:04,551 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:20:04,817 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:20:05,114 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-04-18 07:20:05,431 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:20:06,559 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:20:06,896 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-18 07:20:07,232 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:20:07,581 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:20:08,339 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-04-18 07:20:08,635 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-04-18 07:20:08,923 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-18 07:20:09,266 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-04-18 07:20:09,515 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 07:20:09,789 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-04-18 07:20:10,099 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-18 07:20:10,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:20:10,115 INFO L93 Difference]: Finished difference Result 11076 states and 28545 transitions. [2020-04-18 07:20:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 07:20:10,116 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:20:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:20:10,126 INFO L225 Difference]: With dead ends: 11076 [2020-04-18 07:20:10,126 INFO L226 Difference]: Without dead ends: 11076 [2020-04-18 07:20:10,127 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 07:20:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11076 states. [2020-04-18 07:20:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11076 to 5598. [2020-04-18 07:20:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5598 states. [2020-04-18 07:20:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15073 transitions. [2020-04-18 07:20:10,216 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15073 transitions. Word has length 86 [2020-04-18 07:20:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:20:10,216 INFO L479 AbstractCegarLoop]: Abstraction has 5598 states and 15073 transitions. [2020-04-18 07:20:10,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:20:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15073 transitions. [2020-04-18 07:20:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:20:10,222 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:20:10,222 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:20:10,222 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:20:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:20:10,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1511568169, now seen corresponding path program 30 times [2020-04-18 07:20:10,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:20:10,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234131719] [2020-04-18 07:20:10,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:20:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:20:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:20:11,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234131719] [2020-04-18 07:20:11,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:20:11,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:20:11,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120893636] [2020-04-18 07:20:11,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:20:11,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:20:11,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:20:11,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:20:11,847 INFO L87 Difference]: Start difference. First operand 5598 states and 15073 transitions. Second operand 25 states. [2020-04-18 07:20:12,905 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:20:13,182 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:20:13,439 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:20:13,748 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-04-18 07:20:14,048 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:20:14,534 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:20:14,917 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:20:15,363 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-04-18 07:20:16,279 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-18 07:20:16,930 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-04-18 07:20:17,257 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-04-18 07:20:17,603 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-04-18 07:20:17,948 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-04-18 07:20:18,280 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-18 07:20:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:20:18,298 INFO L93 Difference]: Finished difference Result 12867 states and 33362 transitions. [2020-04-18 07:20:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 07:20:18,299 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-04-18 07:20:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:20:18,312 INFO L225 Difference]: With dead ends: 12867 [2020-04-18 07:20:18,312 INFO L226 Difference]: Without dead ends: 12867 [2020-04-18 07:20:18,313 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=522, Invalid=1370, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 07:20:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2020-04-18 07:20:18,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 5730. [2020-04-18 07:20:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5730 states. [2020-04-18 07:20:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 15469 transitions. [2020-04-18 07:20:18,412 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 15469 transitions. Word has length 86 [2020-04-18 07:20:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:20:18,412 INFO L479 AbstractCegarLoop]: Abstraction has 5730 states and 15469 transitions. [2020-04-18 07:20:18,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 07:20:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 15469 transitions. [2020-04-18 07:20:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-04-18 07:20:18,417 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:20:18,417 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:20:18,417 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:20:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:20:18,418 INFO L82 PathProgramCache]: Analyzing trace with hash -864842289, now seen corresponding path program 31 times [2020-04-18 07:20:18,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:20:18,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404792149] [2020-04-18 07:20:18,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:20:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:20:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:20:19,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404792149] [2020-04-18 07:20:19,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:20:19,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-04-18 07:20:19,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903279329] [2020-04-18 07:20:19,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 07:20:19,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:20:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 07:20:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:20:19,958 INFO L87 Difference]: Start difference. First operand 5730 states and 15469 transitions. Second operand 25 states. [2020-04-18 07:20:21,029 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-04-18 07:20:21,336 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-04-18 07:20:21,649 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 07:20:21,960 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-04-18 07:20:22,267 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 07:20:22,795 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-04-18 07:20:23,203 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-18 07:20:23,631 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-18 07:20:24,668 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 07:20:24,989 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 Received shutdown request... [2020-04-18 07:20:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 07:20:25,388 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 07:20:25,394 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 07:20:25,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:20:25 BasicIcfg [2020-04-18 07:20:25,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:20:25,396 INFO L168 Benchmark]: Toolchain (without parser) took 250211.25 ms. Allocated memory was 138.4 MB in the beginning and 994.1 MB in the end (delta: 855.6 MB). Free memory was 98.6 MB in the beginning and 408.4 MB in the end (delta: -309.8 MB). Peak memory consumption was 545.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,396 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1526.65 ms. Allocated memory was 138.4 MB in the beginning and 236.5 MB in the end (delta: 98.0 MB). Free memory was 96.7 MB in the beginning and 172.0 MB in the end (delta: -75.3 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.68 ms. Allocated memory is still 236.5 MB. Free memory was 172.0 MB in the beginning and 167.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,396 INFO L168 Benchmark]: Boogie Preprocessor took 51.61 ms. Allocated memory is still 236.5 MB. Free memory was 167.5 MB in the beginning and 166.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,397 INFO L168 Benchmark]: RCFGBuilder took 820.89 ms. Allocated memory is still 236.5 MB. Free memory was 164.6 MB in the beginning and 120.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,397 INFO L168 Benchmark]: TraceAbstraction took 247711.86 ms. Allocated memory was 236.5 MB in the beginning and 994.1 MB in the end (delta: 757.6 MB). Free memory was 119.5 MB in the beginning and 408.4 MB in the end (delta: -288.9 MB). Peak memory consumption was 468.7 MB. Max. memory is 7.1 GB. [2020-04-18 07:20:25,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1526.65 ms. Allocated memory was 138.4 MB in the beginning and 236.5 MB in the end (delta: 98.0 MB). Free memory was 96.7 MB in the beginning and 172.0 MB in the end (delta: -75.3 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.68 ms. Allocated memory is still 236.5 MB. Free memory was 172.0 MB in the beginning and 167.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.61 ms. Allocated memory is still 236.5 MB. Free memory was 167.5 MB in the beginning and 166.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 820.89 ms. Allocated memory is still 236.5 MB. Free memory was 164.6 MB in the beginning and 120.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247711.86 ms. Allocated memory was 236.5 MB in the beginning and 994.1 MB in the end (delta: 757.6 MB). Free memory was 119.5 MB in the beginning and 408.4 MB in the end (delta: -288.9 MB). Peak memory consumption was 468.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while BasicCegarLoop was constructing difference of abstraction (5730states) and FLOYD_HOARE automaton (currently 19 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (12385 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while BasicCegarLoop was constructing difference of abstraction (5730states) and FLOYD_HOARE automaton (currently 19 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (12385 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while BasicCegarLoop was constructing difference of abstraction (5730states) and FLOYD_HOARE automaton (currently 19 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (12385 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while BasicCegarLoop was constructing difference of abstraction (5730states) and FLOYD_HOARE automaton (currently 19 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (12385 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 247.5s, OverallIterations: 35, TraceHistogramMax: 1, AutomataDifference: 190.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 8951 SDtfs, 31526 SDslu, 81014 SDs, 0 SdLazy, 35833 SolverSat, 1872 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1534 GetRequests, 103 SyntacticMatches, 36 SemanticMatches, 1395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7933 ImplicationChecksByTransitivity, 165.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5932occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 34 MinimizatonAttempts, 140589 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 49.6s InterpolantComputationTime, 2902 NumberOfCodeBlocks, 2902 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2867 ConstructedInterpolants, 0 QuantifiedInterpolants, 3514466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 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 could not prove your program: Timeout Completed graceful shutdown