/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/add-sub07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 11:47:30,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 11:47:30,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 11:47:30,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-30 11:47:30,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-30 11:47:30,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-30 11:47:30,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-30 11:47:30,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-30 11:47:30,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-30 11:47:30,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-30 11:47:30,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-30 11:47:30,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-30 11:47:30,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 11:47:30,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 11:47:30,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 11:47:30,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 11:47:30,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 11:47:30,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 11:47:30,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 11:47:30,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 11:47:30,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 11:47:30,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 11:47:30,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 11:47:30,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 11:47:30,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-30 11:47:30,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-30 11:47:30,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-30 11:47:30,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-30 11:47:30,961 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 [2021-06-30 11:47:31,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 11:47:31,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 11:47:31,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 11:47:31,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 11:47:31,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 11:47:31,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 11:47:31,007 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 11:47:31,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 11:47:31,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 11:47:31,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 11:47:31,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 11:47:31,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:47:31,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 11:47:31,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 11:47:31,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 11:47:31,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 11:47:31,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 11:47:31,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 11:47:31,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 11:47:31,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 11:47:31,444 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 11:47:31,445 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 11:47:31,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/add-sub07.bpl [2021-06-30 11:47:31,460 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/add-sub07.bpl' [2021-06-30 11:47:31,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 11:47:31,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 11:47:31,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 11:47:31,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 11:47:31,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 11:47:31,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 11:47:31,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 11:47:31,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 11:47:31,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 11:47:31,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... [2021-06-30 11:47:31,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 11:47:31,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 11:47:31,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 11:47:31,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 11:47:31,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:47:31,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 11:47:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 11:47:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 11:47:31,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 11:47:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 11:47:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 11:47:31,619 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 11:47:31,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 11:47:31,754 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 11:47:31,756 INFO L202 PluginConnector]: Adding new model add-sub07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:47:31 BoogieIcfgContainer [2021-06-30 11:47:31,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 11:47:31,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 11:47:31,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 11:47:31,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 11:47:31,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:47:31" (1/2) ... [2021-06-30 11:47:31,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369a0b24 and model type add-sub07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 11:47:31, skipping insertion in model container [2021-06-30 11:47:31,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add-sub07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:47:31" (2/2) ... [2021-06-30 11:47:31,762 INFO L111 eAbstractionObserver]: Analyzing ICFG add-sub07.bpl [2021-06-30 11:47:31,769 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 11:47:31,770 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 11:47:31,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 11:47:31,771 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 11:47:31,860 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,860 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,860 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,861 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,861 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,861 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,861 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,861 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,862 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,863 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,864 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,866 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,869 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,872 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,874 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,876 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,898 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork4_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,901 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork5_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,908 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork6_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 11:47:31,934 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-06-30 11:47:31,953 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-30 11:47:31,976 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 11:47:31,976 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 11:47:31,976 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 11:47:31,976 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 11:47:31,976 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 11:47:31,977 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 11:47:31,977 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 11:47:31,977 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 11:47:31,988 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 53 transitions, 162 flow [2021-06-30 11:47:36,037 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27310 states, 27307 states have (on average 6.866664225290219) internal successors, (187508), 27307 states have internal predecessors, (187508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 27310 states, 27307 states have (on average 6.866664225290219) internal successors, (187508), 27307 states have internal predecessors, (187508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-30 11:47:36,408 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:36,409 INFO L504 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] [2021-06-30 11:47:36,409 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1604306283, now seen corresponding path program 1 times [2021-06-30 11:47:36,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:36,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405643620] [2021-06-30 11:47:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 11:47:36,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:36,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405643620] [2021-06-30 11:47:36,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405643620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:36,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:36,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 11:47:36,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153044476] [2021-06-30 11:47:36,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 11:47:36,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:36,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 11:47:36,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:47:36,656 INFO L87 Difference]: Start difference. First operand has 27310 states, 27307 states have (on average 6.866664225290219) internal successors, (187508), 27307 states have internal predecessors, (187508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:37,461 INFO L93 Difference]: Finished difference Result 31680 states and 217032 transitions. [2021-06-30 11:47:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 11:47:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-30 11:47:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:37,990 INFO L225 Difference]: With dead ends: 31680 [2021-06-30 11:47:37,991 INFO L226 Difference]: Without dead ends: 31672 [2021-06-30 11:47:37,992 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:47:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31672 states. [2021-06-30 11:47:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31672 to 27681. [2021-06-30 11:47:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27681 states, 27680 states have (on average 6.860765895953757) internal successors, (189906), 27680 states have internal predecessors, (189906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27681 states to 27681 states and 189906 transitions. [2021-06-30 11:47:40,922 INFO L78 Accepts]: Start accepts. Automaton has 27681 states and 189906 transitions. Word has length 23 [2021-06-30 11:47:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:47:40,923 INFO L482 AbstractCegarLoop]: Abstraction has 27681 states and 189906 transitions. [2021-06-30 11:47:40,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 27681 states and 189906 transitions. [2021-06-30 11:47:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:47:41,342 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:41,343 INFO L504 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] [2021-06-30 11:47:41,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 11:47:41,344 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:41,344 INFO L82 PathProgramCache]: Analyzing trace with hash -689333341, now seen corresponding path program 1 times [2021-06-30 11:47:41,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:41,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431957600] [2021-06-30 11:47:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:47:41,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:41,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431957600] [2021-06-30 11:47:41,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431957600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:41,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:41,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:47:41,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241582589] [2021-06-30 11:47:41,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:47:41,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:41,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:47:41,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:41,425 INFO L87 Difference]: Start difference. First operand 27681 states and 189906 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:42,140 INFO L93 Difference]: Finished difference Result 33142 states and 226894 transitions. [2021-06-30 11:47:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:47:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:47:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:42,346 INFO L225 Difference]: With dead ends: 33142 [2021-06-30 11:47:42,346 INFO L226 Difference]: Without dead ends: 33130 [2021-06-30 11:47:42,347 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33130 states. [2021-06-30 11:47:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33130 to 27928. [2021-06-30 11:47:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27928 states, 27927 states have (on average 6.858631431947577) internal successors, (191541), 27927 states have internal predecessors, (191541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27928 states to 27928 states and 191541 transitions. [2021-06-30 11:47:45,082 INFO L78 Accepts]: Start accepts. Automaton has 27928 states and 191541 transitions. Word has length 26 [2021-06-30 11:47:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:47:45,082 INFO L482 AbstractCegarLoop]: Abstraction has 27928 states and 191541 transitions. [2021-06-30 11:47:45,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 27928 states and 191541 transitions. [2021-06-30 11:47:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:47:45,175 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:45,175 INFO L504 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] [2021-06-30 11:47:45,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 11:47:45,175 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2040627061, now seen corresponding path program 1 times [2021-06-30 11:47:45,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:45,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449337794] [2021-06-30 11:47:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:47:45,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:45,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449337794] [2021-06-30 11:47:45,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449337794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:45,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:45,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:47:45,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270577946] [2021-06-30 11:47:45,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:47:45,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:45,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:47:45,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:45,230 INFO L87 Difference]: Start difference. First operand 27928 states and 191541 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:45,802 INFO L93 Difference]: Finished difference Result 34166 states and 233737 transitions. [2021-06-30 11:47:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:47:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:47:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:46,267 INFO L225 Difference]: With dead ends: 34166 [2021-06-30 11:47:46,267 INFO L226 Difference]: Without dead ends: 34138 [2021-06-30 11:47:46,268 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34138 states. [2021-06-30 11:47:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34138 to 28571. [2021-06-30 11:47:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28571 states, 28570 states have (on average 6.862373118655933) internal successors, (196058), 28570 states have internal predecessors, (196058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28571 states to 28571 states and 196058 transitions. [2021-06-30 11:47:49,093 INFO L78 Accepts]: Start accepts. Automaton has 28571 states and 196058 transitions. Word has length 26 [2021-06-30 11:47:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:47:49,094 INFO L482 AbstractCegarLoop]: Abstraction has 28571 states and 196058 transitions. [2021-06-30 11:47:49,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28571 states and 196058 transitions. [2021-06-30 11:47:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:47:49,426 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:49,426 INFO L504 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] [2021-06-30 11:47:49,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-30 11:47:49,426 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:49,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1739163851, now seen corresponding path program 1 times [2021-06-30 11:47:49,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:49,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075378767] [2021-06-30 11:47:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:47:49,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:49,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075378767] [2021-06-30 11:47:49,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075378767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:49,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:49,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:47:49,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841910047] [2021-06-30 11:47:49,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:47:49,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:49,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:47:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:49,485 INFO L87 Difference]: Start difference. First operand 28571 states and 196058 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:50,004 INFO L93 Difference]: Finished difference Result 34927 states and 238937 transitions. [2021-06-30 11:47:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:47:50,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:47:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:50,294 INFO L225 Difference]: With dead ends: 34927 [2021-06-30 11:47:50,294 INFO L226 Difference]: Without dead ends: 34903 [2021-06-30 11:47:50,296 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34903 states. [2021-06-30 11:47:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34903 to 29203. [2021-06-30 11:47:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29203 states, 29202 states have (on average 6.868193959317855) internal successors, (200565), 29202 states have internal predecessors, (200565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29203 states to 29203 states and 200565 transitions. [2021-06-30 11:47:53,153 INFO L78 Accepts]: Start accepts. Automaton has 29203 states and 200565 transitions. Word has length 26 [2021-06-30 11:47:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:47:53,154 INFO L482 AbstractCegarLoop]: Abstraction has 29203 states and 200565 transitions. [2021-06-30 11:47:53,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 29203 states and 200565 transitions. [2021-06-30 11:47:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:47:53,244 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:53,244 INFO L504 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] [2021-06-30 11:47:53,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-30 11:47:53,244 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1752374153, now seen corresponding path program 1 times [2021-06-30 11:47:53,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:53,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198382014] [2021-06-30 11:47:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:47:53,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:53,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198382014] [2021-06-30 11:47:53,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198382014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:53,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:53,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:47:53,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214289346] [2021-06-30 11:47:53,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:47:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:47:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:53,308 INFO L87 Difference]: Start difference. First operand 29203 states and 200565 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:53,848 INFO L93 Difference]: Finished difference Result 35033 states and 239861 transitions. [2021-06-30 11:47:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:47:53,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:47:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:54,222 INFO L225 Difference]: With dead ends: 35033 [2021-06-30 11:47:54,223 INFO L226 Difference]: Without dead ends: 34996 [2021-06-30 11:47:54,223 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34996 states. [2021-06-30 11:47:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34996 to 29672. [2021-06-30 11:47:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29672 states, 29671 states have (on average 6.867311516295373) internal successors, (203760), 29671 states have internal predecessors, (203760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29672 states to 29672 states and 203760 transitions. [2021-06-30 11:47:56,874 INFO L78 Accepts]: Start accepts. Automaton has 29672 states and 203760 transitions. Word has length 26 [2021-06-30 11:47:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:47:56,874 INFO L482 AbstractCegarLoop]: Abstraction has 29672 states and 203760 transitions. [2021-06-30 11:47:56,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29672 states and 203760 transitions. [2021-06-30 11:47:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:47:56,964 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:47:56,964 INFO L504 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] [2021-06-30 11:47:56,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-30 11:47:56,965 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:47:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:47:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1976588951, now seen corresponding path program 1 times [2021-06-30 11:47:56,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:47:56,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638460139] [2021-06-30 11:47:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:47:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:47:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:47:56,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:47:56,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638460139] [2021-06-30 11:47:56,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638460139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:47:56,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:47:56,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:47:56,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243888340] [2021-06-30 11:47:56,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:47:56,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:47:56,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:47:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:56,995 INFO L87 Difference]: Start difference. First operand 29672 states and 203760 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:47:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:47:57,319 INFO L93 Difference]: Finished difference Result 36117 states and 247188 transitions. [2021-06-30 11:47:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:47:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:47:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:47:57,509 INFO L225 Difference]: With dead ends: 36117 [2021-06-30 11:47:57,509 INFO L226 Difference]: Without dead ends: 36097 [2021-06-30 11:47:57,509 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:47:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36097 states. [2021-06-30 11:47:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36097 to 30227. [2021-06-30 11:48:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30227 states, 30226 states have (on average 6.868556871567525) internal successors, (207609), 30226 states have internal predecessors, (207609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30227 states to 30227 states and 207609 transitions. [2021-06-30 11:48:00,193 INFO L78 Accepts]: Start accepts. Automaton has 30227 states and 207609 transitions. Word has length 26 [2021-06-30 11:48:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:00,193 INFO L482 AbstractCegarLoop]: Abstraction has 30227 states and 207609 transitions. [2021-06-30 11:48:00,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 30227 states and 207609 transitions. [2021-06-30 11:48:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:48:00,293 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:00,293 INFO L504 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] [2021-06-30 11:48:00,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-30 11:48:00,293 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:00,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1990284877, now seen corresponding path program 1 times [2021-06-30 11:48:00,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:00,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942149838] [2021-06-30 11:48:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:48:00,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:00,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942149838] [2021-06-30 11:48:00,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942149838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:00,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:00,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:48:00,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739928016] [2021-06-30 11:48:00,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:48:00,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:00,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:48:00,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:48:00,323 INFO L87 Difference]: Start difference. First operand 30227 states and 207609 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:00,675 INFO L93 Difference]: Finished difference Result 36574 states and 250628 transitions. [2021-06-30 11:48:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:48:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:48:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:00,871 INFO L225 Difference]: With dead ends: 36574 [2021-06-30 11:48:00,872 INFO L226 Difference]: Without dead ends: 36542 [2021-06-30 11:48:00,872 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:48:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36542 states. [2021-06-30 11:48:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36542 to 30715. [2021-06-30 11:48:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30715 states, 30714 states have (on average 6.86914761997786) internal successors, (210979), 30714 states have internal predecessors, (210979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30715 states to 30715 states and 210979 transitions. [2021-06-30 11:48:03,613 INFO L78 Accepts]: Start accepts. Automaton has 30715 states and 210979 transitions. Word has length 26 [2021-06-30 11:48:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:03,614 INFO L482 AbstractCegarLoop]: Abstraction has 30715 states and 210979 transitions. [2021-06-30 11:48:03,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 30715 states and 210979 transitions. [2021-06-30 11:48:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:48:03,716 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:03,717 INFO L504 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] [2021-06-30 11:48:03,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-30 11:48:03,717 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1345496041, now seen corresponding path program 1 times [2021-06-30 11:48:03,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:03,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306312658] [2021-06-30 11:48:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:48:04,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:04,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306312658] [2021-06-30 11:48:04,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306312658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:04,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:04,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:48:04,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072818116] [2021-06-30 11:48:04,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:48:04,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:04,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:48:04,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:48:04,206 INFO L87 Difference]: Start difference. First operand 30715 states and 210979 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:04,665 INFO L93 Difference]: Finished difference Result 37338 states and 255736 transitions. [2021-06-30 11:48:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:48:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-30 11:48:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:05,187 INFO L225 Difference]: With dead ends: 37338 [2021-06-30 11:48:05,187 INFO L226 Difference]: Without dead ends: 37322 [2021-06-30 11:48:05,187 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:48:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37322 states. [2021-06-30 11:48:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37322 to 31200. [2021-06-30 11:48:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31200 states, 31199 states have (on average 6.8697394147248305) internal successors, (214329), 31199 states have internal predecessors, (214329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31200 states to 31200 states and 214329 transitions. [2021-06-30 11:48:07,869 INFO L78 Accepts]: Start accepts. Automaton has 31200 states and 214329 transitions. Word has length 26 [2021-06-30 11:48:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:07,870 INFO L482 AbstractCegarLoop]: Abstraction has 31200 states and 214329 transitions. [2021-06-30 11:48:07,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31200 states and 214329 transitions. [2021-06-30 11:48:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:07,966 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:07,966 INFO L504 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] [2021-06-30 11:48:07,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-30 11:48:07,966 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1071013715, now seen corresponding path program 1 times [2021-06-30 11:48:07,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:07,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545296187] [2021-06-30 11:48:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:08,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:08,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545296187] [2021-06-30 11:48:08,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545296187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:08,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:08,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622130481] [2021-06-30 11:48:08,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:08,012 INFO L87 Difference]: Start difference. First operand 31200 states and 214329 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:08,735 INFO L93 Difference]: Finished difference Result 39074 states and 267537 transitions. [2021-06-30 11:48:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:08,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:08,949 INFO L225 Difference]: With dead ends: 39074 [2021-06-30 11:48:08,949 INFO L226 Difference]: Without dead ends: 39042 [2021-06-30 11:48:08,950 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39042 states. [2021-06-30 11:48:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39042 to 31315. [2021-06-30 11:48:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31315 states, 31314 states have (on average 6.863990547359009) internal successors, (214939), 31314 states have internal predecessors, (214939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31315 states to 31315 states and 214939 transitions. [2021-06-30 11:48:11,868 INFO L78 Accepts]: Start accepts. Automaton has 31315 states and 214939 transitions. Word has length 29 [2021-06-30 11:48:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:11,868 INFO L482 AbstractCegarLoop]: Abstraction has 31315 states and 214939 transitions. [2021-06-30 11:48:11,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31315 states and 214939 transitions. [2021-06-30 11:48:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:11,976 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:11,976 INFO L504 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] [2021-06-30 11:48:11,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-30 11:48:11,976 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:11,976 INFO L82 PathProgramCache]: Analyzing trace with hash 555837331, now seen corresponding path program 1 times [2021-06-30 11:48:11,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:11,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351047167] [2021-06-30 11:48:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:12,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:12,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351047167] [2021-06-30 11:48:12,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351047167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:12,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:12,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:12,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534834074] [2021-06-30 11:48:12,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:12,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:12,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:12,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:12,032 INFO L87 Difference]: Start difference. First operand 31315 states and 214939 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:12,640 INFO L93 Difference]: Finished difference Result 39730 states and 271876 transitions. [2021-06-30 11:48:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:12,854 INFO L225 Difference]: With dead ends: 39730 [2021-06-30 11:48:12,854 INFO L226 Difference]: Without dead ends: 39702 [2021-06-30 11:48:12,854 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39702 states. [2021-06-30 11:48:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39702 to 31838. [2021-06-30 11:48:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31838 states, 31837 states have (on average 6.874548481326758) internal successors, (218865), 31837 states have internal predecessors, (218865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31838 states to 31838 states and 218865 transitions. [2021-06-30 11:48:15,769 INFO L78 Accepts]: Start accepts. Automaton has 31838 states and 218865 transitions. Word has length 29 [2021-06-30 11:48:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:15,769 INFO L482 AbstractCegarLoop]: Abstraction has 31838 states and 218865 transitions. [2021-06-30 11:48:15,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 31838 states and 218865 transitions. [2021-06-30 11:48:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:16,094 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:16,095 INFO L504 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] [2021-06-30 11:48:16,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-30 11:48:16,095 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1359266623, now seen corresponding path program 1 times [2021-06-30 11:48:16,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:16,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174495235] [2021-06-30 11:48:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:16,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:16,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174495235] [2021-06-30 11:48:16,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174495235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:16,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:16,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:16,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339139230] [2021-06-30 11:48:16,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:16,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:16,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:16,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:16,196 INFO L87 Difference]: Start difference. First operand 31838 states and 218865 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:16,576 INFO L93 Difference]: Finished difference Result 39493 states and 270521 transitions. [2021-06-30 11:48:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:16,988 INFO L225 Difference]: With dead ends: 39493 [2021-06-30 11:48:16,989 INFO L226 Difference]: Without dead ends: 39452 [2021-06-30 11:48:16,989 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39452 states. [2021-06-30 11:48:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39452 to 32231. [2021-06-30 11:48:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32231 states, 32230 states have (on average 6.877908780639156) internal successors, (221675), 32230 states have internal predecessors, (221675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32231 states to 32231 states and 221675 transitions. [2021-06-30 11:48:20,044 INFO L78 Accepts]: Start accepts. Automaton has 32231 states and 221675 transitions. Word has length 29 [2021-06-30 11:48:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:20,044 INFO L482 AbstractCegarLoop]: Abstraction has 32231 states and 221675 transitions. [2021-06-30 11:48:20,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 32231 states and 221675 transitions. [2021-06-30 11:48:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:20,192 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:20,192 INFO L504 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] [2021-06-30 11:48:20,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-30 11:48:20,192 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1135051825, now seen corresponding path program 1 times [2021-06-30 11:48:20,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:20,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567684501] [2021-06-30 11:48:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:20,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:20,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567684501] [2021-06-30 11:48:20,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567684501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:20,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:20,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:20,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196826310] [2021-06-30 11:48:20,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:20,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:20,246 INFO L87 Difference]: Start difference. First operand 32231 states and 221675 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:20,912 INFO L93 Difference]: Finished difference Result 40490 states and 277176 transitions. [2021-06-30 11:48:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:20,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:21,190 INFO L225 Difference]: With dead ends: 40490 [2021-06-30 11:48:21,191 INFO L226 Difference]: Without dead ends: 40466 [2021-06-30 11:48:21,191 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40466 states. [2021-06-30 11:48:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40466 to 32593. [2021-06-30 11:48:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32593 states, 32592 states have (on average 6.880154639175258) internal successors, (224238), 32592 states have internal predecessors, (224238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32593 states to 32593 states and 224238 transitions. [2021-06-30 11:48:24,229 INFO L78 Accepts]: Start accepts. Automaton has 32593 states and 224238 transitions. Word has length 29 [2021-06-30 11:48:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:24,230 INFO L482 AbstractCegarLoop]: Abstraction has 32593 states and 224238 transitions. [2021-06-30 11:48:24,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 32593 states and 224238 transitions. [2021-06-30 11:48:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:24,344 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:24,344 INFO L504 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] [2021-06-30 11:48:24,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-30 11:48:24,345 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:24,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1121355899, now seen corresponding path program 1 times [2021-06-30 11:48:24,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:24,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289360181] [2021-06-30 11:48:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:24,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:24,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289360181] [2021-06-30 11:48:24,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289360181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:24,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:24,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:24,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266979159] [2021-06-30 11:48:24,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:24,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:24,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:24,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:24,390 INFO L87 Difference]: Start difference. First operand 32593 states and 224238 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:25,140 INFO L93 Difference]: Finished difference Result 40562 states and 278153 transitions. [2021-06-30 11:48:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:25,401 INFO L225 Difference]: With dead ends: 40562 [2021-06-30 11:48:25,401 INFO L226 Difference]: Without dead ends: 40526 [2021-06-30 11:48:25,401 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40526 states. [2021-06-30 11:48:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40526 to 32753. [2021-06-30 11:48:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32753 states, 32752 states have (on average 6.884556668295066) internal successors, (225483), 32752 states have internal predecessors, (225483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32753 states to 32753 states and 225483 transitions. [2021-06-30 11:48:28,485 INFO L78 Accepts]: Start accepts. Automaton has 32753 states and 225483 transitions. Word has length 29 [2021-06-30 11:48:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:28,485 INFO L482 AbstractCegarLoop]: Abstraction has 32753 states and 225483 transitions. [2021-06-30 11:48:28,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 32753 states and 225483 transitions. [2021-06-30 11:48:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-30 11:48:28,616 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:48:28,616 INFO L504 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] [2021-06-30 11:48:28,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-30 11:48:28,616 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:48:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:48:28,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1766144735, now seen corresponding path program 1 times [2021-06-30 11:48:28,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:48:28,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012614394] [2021-06-30 11:48:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:48:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:48:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:48:28,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:48:28,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012614394] [2021-06-30 11:48:28,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012614394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:48:28,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:48:28,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:48:28,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674981831] [2021-06-30 11:48:28,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:48:28,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:48:28,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:48:28,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:28,676 INFO L87 Difference]: Start difference. First operand 32753 states and 225483 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:48:29,091 INFO L93 Difference]: Finished difference Result 41032 states and 281232 transitions. [2021-06-30 11:48:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:48:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-30 11:48:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:48:29,637 INFO L225 Difference]: With dead ends: 41032 [2021-06-30 11:48:29,638 INFO L226 Difference]: Without dead ends: 41012 [2021-06-30 11:48:29,638 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:48:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41012 states. [2021-06-30 11:48:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41012 to 32890. [2021-06-30 11:48:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32890 states, 32889 states have (on average 6.881115266502478) internal successors, (226313), 32889 states have internal predecessors, (226313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32890 states to 32890 states and 226313 transitions. [2021-06-30 11:48:32,586 INFO L78 Accepts]: Start accepts. Automaton has 32890 states and 226313 transitions. Word has length 29 [2021-06-30 11:48:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:48:32,586 INFO L482 AbstractCegarLoop]: Abstraction has 32890 states and 226313 transitions. [2021-06-30 11:48:32,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:48:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32890 states and 226313 transitions.