/usr/bin/java -Xmx16000000000 -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/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:14:37,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:14:37,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:14:37,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 20:14:38,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 20:14:38,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 20:14:38,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 20:14:38,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 20:14:38,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 20:14:38,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 20:14:38,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 20:14:38,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 20:14:38,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 20:14:38,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 20:14:38,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 20:14:38,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 20:14:38,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 20:14:38,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 20:14:38,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 20:14:38,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 20:14:38,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 20:14:38,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 20:14:38,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 20:14:38,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 20:14:38,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 20:14:38,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 20:14:38,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 20:14:38,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 20:14:38,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 20:14:38,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 20:14:38,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 20:14:38,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 20:14:38,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 20:14:38,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 20:14:38,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 20:14:38,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 20:14:38,049 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 [2021-06-05 20:14:38,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:14:38,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:14:38,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:14:38,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:14:38,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:14:38,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:14:38,090 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:14:38,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:14:38,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:14:38,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:14:38,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:14:38,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:14:38,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:14:38,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:14:38,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:14:38,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:14:38,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:14:38,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:14:38,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 20:14:38,557 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 20:14:38,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2021-06-05 20:14:38,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0591d76/14366dde16724051b75e3354b46142d0/FLAGe28331746 [2021-06-05 20:14:39,091 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 20:14:39,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2021-06-05 20:14:39,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0591d76/14366dde16724051b75e3354b46142d0/FLAGe28331746 [2021-06-05 20:14:39,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0591d76/14366dde16724051b75e3354b46142d0 [2021-06-05 20:14:39,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:14:39,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 20:14:39,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 20:14:39,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 20:14:39,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 20:14:39,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:14:39" (1/1) ... [2021-06-05 20:14:39,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d215aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:39, skipping insertion in model container [2021-06-05 20:14:39,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:14:39" (1/1) ... [2021-06-05 20:14:39,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 20:14:39,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 20:14:39,902 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 20:14:40,165 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2021-06-05 20:14:40,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:14:40,198 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 20:14:40,208 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 20:14:40,233 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2021-06-05 20:14:40,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:14:40,288 INFO L208 MainTranslator]: Completed translation [2021-06-05 20:14:40,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40 WrapperNode [2021-06-05 20:14:40,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 20:14:40,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:14:40,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:14:40,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:14:40,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:14:40,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:14:40,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:14:40,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:14:40,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (1/1) ... [2021-06-05 20:14:40,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:14:40,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:14:40,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:14:40,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:14:40,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (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 [2021-06-05 20:14:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 20:14:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 20:14:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-05 20:14:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 20:14:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 20:14:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 20:14:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-05 20:14:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-05 20:14:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:14:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:14:40,434 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 20:14:40,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:14:40,776 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 20:14:40,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:14:40 BoogieIcfgContainer [2021-06-05 20:14:40,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:14:40,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:14:40,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:14:40,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:14:40,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:14:39" (1/3) ... [2021-06-05 20:14:40,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bebd7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:14:40, skipping insertion in model container [2021-06-05 20:14:40,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:14:40" (2/3) ... [2021-06-05 20:14:40,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bebd7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:14:40, skipping insertion in model container [2021-06-05 20:14:40,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:14:40" (3/3) ... [2021-06-05 20:14:40,784 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-06-05 20:14:40,787 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:14:40,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:14:40,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:14:40,788 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,810 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,811 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,812 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,813 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,813 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,814 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,815 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,815 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,815 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,815 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,815 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:14:40,821 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 20:14:40,835 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 20:14:40,856 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:14:40,856 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:14:40,856 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:14:40,856 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:14:40,856 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:14:40,857 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:14:40,857 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:14:40,857 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == threadThread1of1ForFork0======== [2021-06-05 20:14:40,865 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 72 transitions, 152 flow [2021-06-05 20:14:40,884 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-06-05 20:14:40,895 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:40,896 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:40,897 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 581243392, now seen corresponding path program 1 times [2021-06-05 20:14:40,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:40,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316638794] [2021-06-05 20:14:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:41,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:41,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316638794] [2021-06-05 20:14:41,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316638794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:41,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:41,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 20:14:41,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251178714] [2021-06-05 20:14:41,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 20:14:41,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:41,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 20:14:41,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 20:14:41,238 INFO L87 Difference]: Start difference. First operand has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-06-05 20:14:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:41,269 INFO L93 Difference]: Finished difference Result 197 states and 351 transitions. [2021-06-05 20:14:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 20:14:41,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-06-05 20:14:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:41,280 INFO L225 Difference]: With dead ends: 197 [2021-06-05 20:14:41,280 INFO L226 Difference]: Without dead ends: 147 [2021-06-05 20:14:41,281 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 20:14:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-06-05 20:14:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-06-05 20:14:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.7602739726027397) internal successors, (257), 146 states have internal predecessors, (257), 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) [2021-06-05 20:14:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 257 transitions. [2021-06-05 20:14:41,327 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 257 transitions. Word has length 43 [2021-06-05 20:14:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:41,327 INFO L482 AbstractCegarLoop]: Abstraction has 147 states and 257 transitions. [2021-06-05 20:14:41,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-06-05 20:14:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 257 transitions. [2021-06-05 20:14:41,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-06-05 20:14:41,329 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:41,329 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:41,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:14:41,330 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:41,332 INFO L82 PathProgramCache]: Analyzing trace with hash 581244353, now seen corresponding path program 1 times [2021-06-05 20:14:41,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:41,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298907405] [2021-06-05 20:14:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:41,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:41,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298907405] [2021-06-05 20:14:41,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298907405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:41,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:41,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:14:41,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178614298] [2021-06-05 20:14:41,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:14:41,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:41,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:14:41,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:41,431 INFO L87 Difference]: Start difference. First operand 147 states and 257 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-06-05 20:14:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:41,445 INFO L93 Difference]: Finished difference Result 120 states and 200 transitions. [2021-06-05 20:14:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:14:41,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-06-05 20:14:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:41,452 INFO L225 Difference]: With dead ends: 120 [2021-06-05 20:14:41,452 INFO L226 Difference]: Without dead ends: 120 [2021-06-05 20:14:41,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-06-05 20:14:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-06-05 20:14:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.680672268907563) internal successors, (200), 119 states have internal predecessors, (200), 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) [2021-06-05 20:14:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 200 transitions. [2021-06-05 20:14:41,467 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 200 transitions. Word has length 43 [2021-06-05 20:14:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:41,467 INFO L482 AbstractCegarLoop]: Abstraction has 120 states and 200 transitions. [2021-06-05 20:14:41,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-06-05 20:14:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 200 transitions. [2021-06-05 20:14:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 20:14:41,468 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:41,468 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:41,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:14:41,469 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 150500378, now seen corresponding path program 1 times [2021-06-05 20:14:41,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:41,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99906237] [2021-06-05 20:14:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:41,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:41,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99906237] [2021-06-05 20:14:41,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99906237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:41,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:41,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:14:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071502443] [2021-06-05 20:14:41,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:14:41,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:14:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:41,520 INFO L87 Difference]: Start difference. First operand 120 states and 200 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-06-05 20:14:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:41,541 INFO L93 Difference]: Finished difference Result 148 states and 256 transitions. [2021-06-05 20:14:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:14:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-06-05 20:14:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:41,542 INFO L225 Difference]: With dead ends: 148 [2021-06-05 20:14:41,542 INFO L226 Difference]: Without dead ends: 148 [2021-06-05 20:14:41,543 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:14:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-06-05 20:14:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2021-06-05 20:14:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.6984126984126984) internal successors, (214), 126 states have internal predecessors, (214), 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) [2021-06-05 20:14:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 214 transitions. [2021-06-05 20:14:41,551 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 214 transitions. Word has length 48 [2021-06-05 20:14:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:41,552 INFO L482 AbstractCegarLoop]: Abstraction has 127 states and 214 transitions. [2021-06-05 20:14:41,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-06-05 20:14:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 214 transitions. [2021-06-05 20:14:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 20:14:41,554 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:41,554 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:41,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 20:14:41,554 INFO L430 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:41,555 INFO L82 PathProgramCache]: Analyzing trace with hash -930964162, now seen corresponding path program 1 times [2021-06-05 20:14:41,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:41,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714382002] [2021-06-05 20:14:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:41,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:41,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714382002] [2021-06-05 20:14:41,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714382002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:41,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236794509] [2021-06-05 20:14:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:41,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 20:14:41,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:42,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236794509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:42,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:42,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 20:14:42,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389973738] [2021-06-05 20:14:42,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:14:42,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:42,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:14:42,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:14:42,082 INFO L87 Difference]: Start difference. First operand 127 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 20:14:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:42,155 INFO L93 Difference]: Finished difference Result 183 states and 326 transitions. [2021-06-05 20:14:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:14:42,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 53 [2021-06-05 20:14:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:42,156 INFO L225 Difference]: With dead ends: 183 [2021-06-05 20:14:42,156 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 20:14:42,157 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:14:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 20:14:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2021-06-05 20:14:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.763975155279503) internal successors, (284), 161 states have internal predecessors, (284), 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) [2021-06-05 20:14:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 284 transitions. [2021-06-05 20:14:42,160 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 284 transitions. Word has length 53 [2021-06-05 20:14:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:42,160 INFO L482 AbstractCegarLoop]: Abstraction has 162 states and 284 transitions. [2021-06-05 20:14:42,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 20:14:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 284 transitions. [2021-06-05 20:14:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 20:14:42,161 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:42,162 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:42,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:42,379 INFO L430 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1666747034, now seen corresponding path program 2 times [2021-06-05 20:14:42,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:42,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667738571] [2021-06-05 20:14:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:42,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:42,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667738571] [2021-06-05 20:14:42,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667738571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:42,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484653661] [2021-06-05 20:14:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:14:42,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:42,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 20:14:42,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:42,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484653661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:42,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:14:42,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 20:14:42,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524106822] [2021-06-05 20:14:42,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:14:42,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:14:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:14:42,837 INFO L87 Difference]: Start difference. First operand 162 states and 284 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-06-05 20:14:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:42,936 INFO L93 Difference]: Finished difference Result 218 states and 396 transitions. [2021-06-05 20:14:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:14:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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 58 [2021-06-05 20:14:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:42,939 INFO L225 Difference]: With dead ends: 218 [2021-06-05 20:14:42,939 INFO L226 Difference]: Without dead ends: 218 [2021-06-05 20:14:42,939 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 20:14:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-06-05 20:14:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2021-06-05 20:14:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.8061224489795917) internal successors, (354), 196 states have internal predecessors, (354), 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) [2021-06-05 20:14:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 354 transitions. [2021-06-05 20:14:42,946 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 354 transitions. Word has length 58 [2021-06-05 20:14:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:42,946 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 354 transitions. [2021-06-05 20:14:42,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-06-05 20:14:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 354 transitions. [2021-06-05 20:14:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-06-05 20:14:42,951 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:42,951 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:43,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:43,168 INFO L430 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1328322238, now seen corresponding path program 3 times [2021-06-05 20:14:43,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:43,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56526392] [2021-06-05 20:14:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:43,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:43,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56526392] [2021-06-05 20:14:43,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56526392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:14:43,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042332160] [2021-06-05 20:14:43,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:43,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 20:14:43,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:14:43,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 20:14:43,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:14:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 20:14:43,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042332160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:43,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 20:14:43,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-06-05 20:14:43,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9520778] [2021-06-05 20:14:43,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:14:43,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:43,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:14:43,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 20:14:43,618 INFO L87 Difference]: Start difference. First operand 197 states and 354 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 20:14:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:43,705 INFO L93 Difference]: Finished difference Result 193 states and 348 transitions. [2021-06-05 20:14:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:14:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 63 [2021-06-05 20:14:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:43,705 INFO L225 Difference]: With dead ends: 193 [2021-06-05 20:14:43,705 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 20:14:43,705 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 20:14:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 20:14:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 20:14:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-05 20:14:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 20:14:43,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2021-06-05 20:14:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:43,706 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 20:14:43,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 20:14:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 20:14:43,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:14:43,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:14:43,921 INFO L301 ceAbstractionStarter]: Result for error location threadThread1of1ForFork0 was SAFE (1/3) [2021-06-05 20:14:43,923 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 20:14:43,923 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:14:43,923 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:14:43,923 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:14:43,923 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:14:43,923 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:14:43,924 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:14:43,924 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:14:43,924 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:14:43,925 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 72 transitions, 152 flow [2021-06-05 20:14:43,928 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:43,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:14:43,928 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-06-05 20:14:43,929 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 20:14:43,929 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:14:43,929 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:14:43,929 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:14:43,929 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:14:43,929 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:14:43,929 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:14:43,929 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:14:43,929 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread======== [2021-06-05 20:14:43,930 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 72 transitions, 152 flow [2021-06-05 20:14:43,933 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 195 states have (on average 1.9846153846153847) internal successors, (387), 196 states have internal predecessors, (387), 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) [2021-06-05 20:14:43,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:14:43,933 INFO L301 ceAbstractionStarter]: Result for error location thread was SAFE (3/3) [2021-06-05 20:14:43,934 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:14:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:14:43 BasicIcfg [2021-06-05 20:14:43,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:14:43,936 INFO L168 Benchmark]: Toolchain (without parser) took 4290.81 ms. Allocated memory is still 352.3 MB. Free memory was 315.2 MB in the beginning and 250.2 MB in the end (delta: 65.0 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.0 GB. [2021-06-05 20:14:43,936 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:14:43,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.79 ms. Allocated memory is still 352.3 MB. Free memory was 315.0 MB in the beginning and 315.3 MB in the end (delta: -257.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-05 20:14:43,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 352.3 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:14:43,937 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 352.3 MB. Free memory was 313.2 MB in the beginning and 312.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:14:43,937 INFO L168 Benchmark]: RCFGBuilder took 416.80 ms. Allocated memory is still 352.3 MB. Free memory was 312.1 MB in the beginning and 288.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 20:14:43,937 INFO L168 Benchmark]: TraceAbstraction took 3156.58 ms. Allocated memory is still 352.3 MB. Free memory was 288.0 MB in the beginning and 250.2 MB in the end (delta: 37.8 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.0 GB. [2021-06-05 20:14:43,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 641.79 ms. Allocated memory is still 352.3 MB. Free memory was 315.0 MB in the beginning and 315.3 MB in the end (delta: -257.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 352.3 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 352.3 MB. Free memory was 313.2 MB in the beginning and 312.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 416.80 ms. Allocated memory is still 352.3 MB. Free memory was 312.1 MB in the beginning and 288.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3156.58 ms. Allocated memory is still 352.3 MB. Free memory was 288.0 MB in the beginning and 250.2 MB in the end (delta: 37.8 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: threadThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3067.4ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 21.1ms, AutomataDifference: 374.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 402 SDtfs, 230 SDslu, 823 SDs, 0 SdLazy, 107 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 259.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.3ms SsaConstructionTime, 227.8ms SatisfiabilityAnalysisTime, 1273.2ms InterpolantComputationTime, 482 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 645 SizeOfPredicates, 10 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 18/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread with 1 thread instances CFG has 3 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...